diff --git a/src/buildno.h b/src/buildno.h
index c494bb5ee..11bf425d6 100644
--- a/src/buildno.h
+++ b/src/buildno.h
@@ -1,3 +1,3 @@
 #define VERSION_MAJOR 3
 #define VERSION_MINOR 6
-#define VERSION_BUILD 3
+#define VERSION_BUILD 4
diff --git a/src/kernel/curse.c b/src/kernel/curse.c
index afa8ac2c3..828552a3a 100644
--- a/src/kernel/curse.c
+++ b/src/kernel/curse.c
@@ -131,7 +131,7 @@ int curse_age(attrib * a)
     else if (c->duration != INT_MAX) {
         c->duration = _max(0, c->duration - 1);
     }
-    return c->duration;
+    return (c->duration > 0) ? AT_AGE_KEEP : AT_AGE_REMOVE;
 }
 
 void destroy_curse(curse * c)
diff --git a/src/kernel/unit.test.c b/src/kernel/unit.test.c
index a76b5ea69..d962fee51 100644
--- a/src/kernel/unit.test.c
+++ b/src/kernel/unit.test.c
@@ -239,6 +239,31 @@ static void test_default_name(CuTest *tc) {
     test_cleanup();
 }
 
+static void test_skill_hunger(CuTest *tc) {
+    unit *u;
+
+    test_cleanup();
+    u = test_create_unit(test_create_faction(0), test_create_region(0, 0, 0));
+    set_level(u, SK_ARMORER, 6);
+    set_level(u, SK_SAILING, 6);
+    fset(u, UFL_HUNGER);
+
+    set_param(&global.parameters, "rules.hunger.reduces_skill", "0");
+    CuAssertIntEquals(tc, 6, effskill(u, SK_ARMORER));
+    CuAssertIntEquals(tc, 6, effskill(u, SK_SAILING));
+
+    set_param(&global.parameters, "rules.hunger.reduces_skill", "1");
+    CuAssertIntEquals(tc, 3, effskill(u, SK_ARMORER));
+    CuAssertIntEquals(tc, 3, effskill(u, SK_SAILING));
+
+    set_param(&global.parameters, "rules.hunger.reduces_skill", "2");
+    CuAssertIntEquals(tc, 3, effskill(u, SK_ARMORER));
+    CuAssertIntEquals(tc, 5, effskill(u, SK_SAILING));
+    set_level(u, SK_SAILING, 2);
+    CuAssertIntEquals(tc, 1, effskill(u, SK_SAILING));
+    test_cleanup();
+}
+
 static void test_skill_familiar(CuTest *tc) {
     unit *mag, *fam;
     region *r;
@@ -267,6 +292,29 @@ static void test_skill_familiar(CuTest *tc) {
     test_cleanup();
 }
 
+static void test_age_familiar(CuTest *tc) {
+    unit *mag, *fam;
+
+    test_cleanup();
+
+    // setup two units
+    mag = test_create_unit(test_create_faction(0), test_create_region(0, 0, 0));
+    fam = test_create_unit(mag->faction, test_create_region(0, 0, 0));
+    CuAssertPtrEquals(tc, 0, get_familiar(mag));
+    CuAssertPtrEquals(tc, 0, get_familiar_mage(fam));
+    CuAssertIntEquals(tc, true, create_newfamiliar(mag, fam));
+    CuAssertPtrEquals(tc, fam, get_familiar(mag));
+    CuAssertPtrEquals(tc, mag, get_familiar_mage(fam));
+    a_age(&fam->attribs);
+    a_age(&mag->attribs);
+    CuAssertPtrEquals(tc, fam, get_familiar(mag));
+    CuAssertPtrEquals(tc, mag, get_familiar_mage(fam));
+    set_number(fam, 0);
+    a_age(&mag->attribs);
+    CuAssertPtrEquals(tc, 0, get_familiar(mag));
+    test_cleanup();
+}
+
 CuSuite *get_unit_suite(void)
 {
     CuSuite *suite = CuSuiteNew();
@@ -281,6 +329,8 @@ CuSuite *get_unit_suite(void)
     SUITE_ADD_TEST(suite, test_remove_empty_units_in_region);
     SUITE_ADD_TEST(suite, test_names);
     SUITE_ADD_TEST(suite, test_default_name);
+    SUITE_ADD_TEST(suite, test_skill_hunger);
     SUITE_ADD_TEST(suite, test_skill_familiar);
+    SUITE_ADD_TEST(suite, test_age_familiar);
     return suite;
 }
diff --git a/src/util/attrib.c b/src/util/attrib.c
index fb50d8dfc..26869cfee 100644
--- a/src/util/attrib.c
+++ b/src/util/attrib.c
@@ -256,7 +256,7 @@ int a_age(attrib ** p)
         if (a->type->age) {
             int result = a->type->age(a);
             assert(result >= 0 || !"age() returned a negative value");
-            if (result == 0) {
+            if (result == AT_AGE_REMOVE) {
                 a_remove(p, a);
                 continue;
             }
diff --git a/src/util/attrib.h b/src/util/attrib.h
index cbba4ebf4..c235fd67a 100644
--- a/src/util/attrib.h
+++ b/src/util/attrib.h
@@ -90,8 +90,8 @@ extern "C" {
 #define AT_READ_OK 0
 #define AT_READ_FAIL -1
 
-#define AT_AGE_KEEP 0           /* keep the attribute for another turn */
-#define AT_AGE_REMOVE 1         /* remove the attribute after calling age() */
+#define AT_AGE_REMOVE 0         /* remove the attribute after calling age() */
+#define AT_AGE_KEEP 1           /* keep the attribute for another turn */
 
 #ifdef __cplusplus
 }