diff --git a/src/economy.test.c b/src/economy.test.c
index c67237c40..2de6265f0 100644
--- a/src/economy.test.c
+++ b/src/economy.test.c
@@ -382,7 +382,7 @@ static void test_make_item(CuTest *tc) {
     free(itype->construction->materials);
     itype->construction->materials = 0;
     rtype->flags |= RTF_LIMITED;
-    rmt = rmt_create(rtype, "rm_stone");
+    rmt = rmt_create(rtype);
     rdata = rtype->limit = calloc(1, sizeof(resource_limit));
     rdata->value = 0;
     add_resource(u->region, 1, 300, 150, rtype);
diff --git a/src/kernel/resources.c b/src/kernel/resources.c
index 1261417f1..e8be234a1 100644
--- a/src/kernel/resources.c
+++ b/src/kernel/resources.c
@@ -185,10 +185,21 @@ struct rawmaterial *rm_get(region * r, const struct resource_type *rtype)
 
 struct rawmaterial_type *rmt_find(const char *str)
 {
+    const char * replace[] = { "rm_tree", "log", NULL };
     resource_type *rtype = rt_find(str);
     if (!rtype && strncmp(str, "rm_", 3) == 0) {
-        rtype = rt_find(str+3);
+        int i;
+        for (i = 0; replace[i]; i+=2) {
+            if (strcmp(replace[i], str) == 0) {
+                rtype = rt_find(replace[i+1]);
+                break;
+            }
+        }
+        if (!rtype) {
+            rtype = rt_find(str+3);
+        }
     }
+    assert(rtype);
     return rtype ? rtype->raw : NULL;
 }
 
@@ -197,8 +208,7 @@ struct rawmaterial_type *rmt_get(const struct resource_type *rtype)
     return rtype->raw;
 }
 
-struct rawmaterial_type *rmt_create(struct resource_type *rtype,
-    const char *name)
+struct rawmaterial_type *rmt_create(struct resource_type *rtype)
 {
     rawmaterial_type *rmtype;
 
diff --git a/src/kernel/resources.h b/src/kernel/resources.h
index 9d248c0f8..3e93ea1de 100644
--- a/src/kernel/resources.h
+++ b/src/kernel/resources.h
@@ -82,8 +82,7 @@ extern "C" {
 
     void add_resource(struct region *r, int level, int base, int divisor,
         const struct resource_type *rtype);
-    struct rawmaterial_type *rmt_create(struct resource_type *rtype,
-        const char *name);
+    struct rawmaterial_type *rmt_create(struct resource_type *rtype);
 
 #ifdef __cplusplus
 }
diff --git a/src/kernel/xmlreader.c b/src/kernel/xmlreader.c
index 2d08f40a4..9ba05e101 100644
--- a/src/kernel/xmlreader.c
+++ b/src/kernel/xmlreader.c
@@ -983,7 +983,7 @@ static int parse_resources(xmlDocPtr doc)
 
         name = xmlGetProp(node, BAD_CAST "material");
         if (name) {
-            rmt_create(rtype, (const char *)name);
+            rmt_create(rtype);
             xmlFree(name);
         }