diff --git a/src/bind_monsters.c b/src/bind_monsters.c
index bd0ef39e3..fd1130053 100644
--- a/src/bind_monsters.c
+++ b/src/bind_monsters.c
@@ -58,34 +58,6 @@ static int tolua_spawn_undead(lua_State * L)
     return 0;
 }
 
-static int fix_familiars(struct lua_State *L)
-{
-    faction *f;
-    for (f = factions; f; f = f->next) {
-        unit *u;
-        for (u = f->units; u; u = u->nextF) {
-            struct sc_mage *mage = get_mage(u);
-            if (mage && is_familiar(u)) {
-                if (mage->spellbook && mage->magietyp == M_GRAY) {
-                    equipment *eq;
-                    char buffer[64];
-
-                    spellbook_clear(mage->spellbook);
-                    free(mage->spellbook);
-                    mage->spellbook = 0;
-
-                    snprintf(buffer, sizeof(buffer), "%s_familiar", u_race(u)->_name);
-                    eq = get_equipment(buffer);
-                    if (eq) {
-                        equip_unit_mask(u, eq, EQUIP_SPELLS);
-                    }
-                }
-            }
-        }
-    }
-    return 0;
-}
-
 void bind_monsters(struct lua_State *L)
 {
     tolua_module(L, NULL, 0);
@@ -95,7 +67,6 @@ void bind_monsters(struct lua_State *L)
         tolua_function(L, TOLUA_CAST "plan_monsters", tolua_planmonsters);
         tolua_function(L, TOLUA_CAST "spawn_undead", tolua_spawn_undead);
         tolua_function(L, TOLUA_CAST "spawn_dragons", tolua_spawn_dragons);
-        tolua_function(L, TOLUA_CAST "fix_familiars", fix_familiars);
         tolua_function(L, TOLUA_CAST "get_monsters", tolua_get_monsters);
     }
     tolua_endmodule(L);
diff --git a/src/bind_storage.c b/src/bind_storage.c
index d2b66f03d..6b582e815 100644
--- a/src/bind_storage.c
+++ b/src/bind_storage.c
@@ -100,7 +100,9 @@ static int tolua_storage_tostring(lua_State * L)
 {
     gamedata *data = (gamedata *)tolua_tousertype(L, 1, 0);
     char name[64];
-    snprintf(name, sizeof(name), "<gamedata %p ver=%d>", (void *)data, data->version);
+    // safe to use sprintf here, because:
+    // %p is at most 16 characters, %d 20, text is 16, comes to 53 with \0
+    sprintf(name, "<gamedata %p ver=%d>", (void *)data, data->version);
     lua_pushstring(L, name);
     return 1;
 }
diff --git a/src/give.test.c b/src/give.test.c
index b6c845450..029ee7c44 100644
--- a/src/give.test.c
+++ b/src/give.test.c
@@ -233,7 +233,6 @@ static void test_give_men_requires_contact(CuTest * tc) {
     struct give env = { 0 };
     message * msg;
     order *ord;
-    char cmd[32];
 
     test_setup_ex(tc);
     env.f1 = test_create_faction(0);
@@ -244,8 +243,7 @@ static void test_give_men_requires_contact(CuTest * tc) {
     CuAssertIntEquals(tc, 1, env.dst->number);
     CuAssertIntEquals(tc, 1, env.src->number);
 
-    snprintf(cmd, sizeof(cmd), "%s ALLES PERSONEN", itoa36(env.dst->no));
-    ord = create_order(K_GIVE, env.f1->locale, cmd);
+    ord = create_order(K_GIVE, env.f1->locale, "%s ALLES PERSONEN", itoa36(env.dst->no));
     test_clear_messages(env.f1);
     give_cmd(env.src, ord);
     CuAssertPtrEquals(tc, 0, test_find_messagetype(env.f1->msgs, "give_person"));
@@ -307,7 +305,6 @@ static void test_give(CuTest * tc) {
 static void test_give_cmd(CuTest * tc) {
     struct give env = { 0 };
     struct order *ord;
-    char cmd[32];
 
     test_setup_ex(tc);
     env.lang = test_create_locale();
@@ -316,8 +313,7 @@ static void test_give_cmd(CuTest * tc) {
 
     i_change(&env.src->items, env.itype, 10);
 
-    snprintf(cmd, sizeof(cmd), "%s 5 %s", itoa36(env.dst->no), LOC(env.f1->locale, env.itype->rtype->_name));
-    ord = create_order(K_GIVE, env.f1->locale, cmd);
+    ord = create_order(K_GIVE, env.f1->locale, "%s 5 %s", itoa36(env.dst->no), LOC(env.f1->locale, env.itype->rtype->_name));
     assert(ord);
     give_cmd(env.src, ord);
     CuAssertIntEquals(tc, 5, i_get(env.src->items, env.itype));
@@ -330,7 +326,6 @@ static void test_give_cmd(CuTest * tc) {
 static void test_give_herbs(CuTest * tc) {
     struct give env = { 0 };
     struct order *ord;
-    char cmd[32];
 
     test_setup_ex(tc);
     test_create_world();
@@ -338,8 +333,7 @@ static void test_give_herbs(CuTest * tc) {
     setup_give(&env);
     i_change(&env.src->items, env.itype, 10);
 
-    snprintf(cmd, sizeof(cmd), "%s %s", itoa36(env.dst->no), LOC(env.f1->locale, parameters[P_HERBS]));
-    ord = create_order(K_GIVE, env.f1->locale, cmd);
+    ord = create_order(K_GIVE, env.f1->locale, "%s %s", itoa36(env.dst->no), LOC(env.f1->locale, parameters[P_HERBS]));
     assert(ord);
 
     give_cmd(env.src, ord);
diff --git a/src/gmtool.c b/src/gmtool.c
index a8881abd9..3db673731 100644
--- a/src/gmtool.c
+++ b/src/gmtool.c
@@ -1167,7 +1167,7 @@ static void handlekey(state * st, int c)
             region *first = (mr && mr->r && mr->r->next) ? mr->r->next : regions;
 
             if (findmode == 'f') {
-                snprintf(sbuffer, sizeof(sbuffer), "find-faction: %s", locate);
+                slprintf(sbuffer, sizeof(sbuffer), "find-faction: %s", locate);
                 statusline(st->wnd_status->handle, sbuffer);
                 f = findfaction(atoi36(locate));
                 if (f == NULL) {
diff --git a/src/json.c b/src/json.c
index 0a78a3fa9..2c27b9947 100644
--- a/src/json.c
+++ b/src/json.c
@@ -67,13 +67,13 @@ int json_export(stream * out, int flags) {
     cJSON *json, *root = cJSON_CreateObject();
     assert(out && out->api);
     if (regions && (flags & EXPORT_REGIONS)) {
-        char id[32];
+        char id[32]; // TODO: static_assert(INT_MAX < 10^32)
         region * r;
         plane * p;
         cJSON_AddItemToObject(root, "planes", json = cJSON_CreateObject());
         for (p = planes; p; p = p->next) {
             cJSON *data;
-            snprintf(id, sizeof(id), "%d", p->id);
+            sprintf(id, "%d", p->id); // safe, unless int is bigger than 64 bit
             cJSON_AddItemToObject(json, id, data = cJSON_CreateObject());
             cJSON_AddNumberToObject(data, "x", p->minx);
             cJSON_AddNumberToObject(data, "y", p->miny);
@@ -85,7 +85,7 @@ int json_export(stream * out, int flags) {
         cJSON_AddItemToObject(root, "regions", json = cJSON_CreateObject());
         for (r = regions; r; r = r->next) {
             cJSON *data;
-            snprintf(id, sizeof(id), "%d", r->uid);
+            sprintf(id, "%d", r->uid); // safe, unless int is bigger than 64 bit
             cJSON_AddItemToObject(json, id, data = cJSON_CreateObject());
             cJSON_AddNumberToObject(data, "x", r->x);
             cJSON_AddNumberToObject(data, "y", r->y);
diff --git a/src/kernel/item.c b/src/kernel/item.c
index 441346be8..34a0e1875 100644
--- a/src/kernel/item.c
+++ b/src/kernel/item.c
@@ -156,7 +156,10 @@ const char *resourcename(const resource_type * rtype, int flags)
         }
         if (flags & NMF_PLURAL) {
             static char name[64]; // FIXME: static return value
-            snprintf(name, sizeof(name), "%s_p", rtype->_name);
+            size_t len = strlen(rtype->_name);
+            assert(len <= sizeof(name) - 3);
+            memcpy(name, rtype->_name, len);
+            strcpy(name + len, "_p");
             return name;
         }
         return rtype->_name;
diff --git a/src/kernel/jsonconf.c b/src/kernel/jsonconf.c
index 509470406..414704309 100644
--- a/src/kernel/jsonconf.c
+++ b/src/kernel/jsonconf.c
@@ -523,6 +523,8 @@ static void disable_feature(const char *str) {
     char name[32];
     int k;
     skill_t sk;
+    size_t len;
+
     sk = findskill(str);
     if (sk != NOSKILL) {
         enable_skill(sk, false);
@@ -534,7 +536,10 @@ static void disable_feature(const char *str) {
         enable_keyword(k, false);
         return;
     }
-    snprintf(name, sizeof(name), "%s.enabled", str);
+    len = strlen(str);
+    assert(len <= sizeof(name) - 9);
+    memcpy(name, str, len);
+    strcpy(name+len, ".enabled");
     log_info("disable feature %s\n", name);
     config_set(name, "0");
 }
@@ -796,10 +801,10 @@ static void json_settings(cJSON *json) {
         else {
             char value[32];
             if (child->type == cJSON_Number && child->valuedouble && child->valueint<child->valuedouble) {
-                snprintf(value, sizeof(value), "%f", child->valuedouble);
+                sprintf(value, "%f", child->valuedouble);
             }
             else {
-                snprintf(value, sizeof(value), "%d", child->valueint);
+                sprintf(value, "%d", child->valueint);
             }
             config_set(child->string, value);
         }
diff --git a/src/kernel/unit.test.c b/src/kernel/unit.test.c
index f242dbb1c..b0a2891c5 100644
--- a/src/kernel/unit.test.c
+++ b/src/kernel/unit.test.c
@@ -140,37 +140,34 @@ static void test_scale_number(CuTest *tc) {
 
 static void test_unit_name(CuTest *tc) {
     unit *u;
-    char name[32];
 
     test_cleanup();
     test_create_world();
     u = test_create_unit(test_create_faction(test_create_race("human")), findregion(0, 0));
+    renumber_unit(u, 666);
     unit_setname(u, "Hodor");
-    snprintf(name, sizeof(name), "Hodor (%s)", itoa36(u->no));
-    CuAssertStrEquals(tc, name, unitname(u));
+    CuAssertStrEquals(tc, "Hodor (ii)", unitname(u));
     test_cleanup();
 }
 
 static void test_unit_name_from_race(CuTest *tc) {
     unit *u;
-    char name[32];
     struct locale *lang;
 
     test_cleanup();
     test_create_world();
     u = test_create_unit(test_create_faction(test_create_race("human")), findregion(0, 0));
+    renumber_unit(u, 666);
     unit_setname(u, NULL);
     lang = get_or_create_locale("de");
     locale_setstring(lang, rc_name_s(u->_race, NAME_SINGULAR), "Mensch");
     locale_setstring(lang, rc_name_s(u->_race, NAME_PLURAL), "Menschen");
 
-    snprintf(name, sizeof(name), "Mensch (%s)", itoa36(u->no));
-    CuAssertStrEquals(tc, name, unitname(u));
+    CuAssertStrEquals(tc, "Mensch (ii)", unitname(u));
     CuAssertStrEquals(tc, "Mensch", unit_getname(u));
 
     u->number = 2;
-    snprintf(name, sizeof(name), "Menschen (%s)", itoa36(u->no));
-    CuAssertStrEquals(tc, name, unitname(u));
+    CuAssertStrEquals(tc, "Menschen (ii)", unitname(u));
     CuAssertStrEquals(tc, "Menschen", unit_getname(u));
 
     test_cleanup();
diff --git a/src/laws.test.c b/src/laws.test.c
index b5471243a..d4753ec19 100644
--- a/src/laws.test.c
+++ b/src/laws.test.c
@@ -521,7 +521,6 @@ static void test_pay_cmd_other_building(CuTest *tc) {
     order *ord;
     faction *f;
     building *b;
-    char cmd[32];
 
     test_setup();
     setup_pay_cmd(&fix);
@@ -531,8 +530,7 @@ static void test_pay_cmd_other_building(CuTest *tc) {
     config_set("rules.region_owner_pay_building", "lighthouse");
     update_owners(b->region);
 
-    snprintf(cmd, sizeof(cmd), "NOT %s", itoa36(b->no));
-    ord = create_order(K_PAY, f->locale, cmd);
+    ord = create_order(K_PAY, f->locale, "NOT %s", itoa36(b->no));
     assert(ord);
     CuAssertPtrEquals(tc, fix.u1, building_owner(b));
     CuAssertIntEquals(tc, 0, pay_cmd(fix.u1, ord));
diff --git a/src/util/bsdstring.c b/src/util/bsdstring.c
index 98d2d00f5..4fc56ce4e 100644
--- a/src/util/bsdstring.c
+++ b/src/util/bsdstring.c
@@ -13,7 +13,7 @@ int wrptr(char **ptr, size_t * size, int result)
 {
     size_t bytes = (size_t)result;
     if (result < 0) {
-        // _snprintf buffer was too small
+        // buffer was too small
         if (*size > 0) {
             **ptr = 0;
             *size = 0;