diff --git a/src/kernel/resources.c b/src/kernel/resources.c
index f40bf0564..8d6e1c2ac 100644
--- a/src/kernel/resources.c
+++ b/src/kernel/resources.c
@@ -193,16 +193,6 @@ struct rawmaterial *rm_get(region * r, const struct resource_type *rtype)
     return rm;
 }
 
-struct rawmaterial_type *rmt_find(const char *str)
-{
-    resource_type *rtype = rt_find(str);
-    if (!rtype && strncmp(str, "rm_", 3) == 0) {
-        rtype = rt_find(str+3);
-    }
-    assert(rtype);
-    return rtype ? rtype->raw : NULL;
-}
-
 struct rawmaterial_type *rmt_get(const struct resource_type *rtype)
 {
     return rtype->raw;
diff --git a/src/kernel/resources.h b/src/kernel/resources.h
index 3bae0778f..67cd48d43 100644
--- a/src/kernel/resources.h
+++ b/src/kernel/resources.h
@@ -65,7 +65,6 @@ extern "C" {
     void terraform_resources(struct region *r);
     struct rawmaterial *rm_get(struct region *,
         const struct resource_type *);
-    struct rawmaterial_type *rmt_find(const char *str);
     struct rawmaterial_type *rmt_get(const struct resource_type *);
 
     struct rawmaterial *add_resource(struct region *r, int level, 
diff --git a/src/kernel/save.c b/src/kernel/save.c
index 7237b0e81..105ad7324 100644
--- a/src/kernel/save.c
+++ b/src/kernel/save.c
@@ -955,6 +955,9 @@ static region *readregion(struct gamedata *data, int x, int y)
                 break;
             res = malloc(sizeof(rawmaterial));
             res->rtype = rt_find(name);
+            if (!res->rtype && strncmp("rm_", name, 3) == 0) {
+                res->rtype = rt_find(name + 3);
+            }
             if (!res->rtype || !res->rtype->raw) {
                 log_error("invalid resourcetype %s in data.", name);
             }