diff --git a/src/strings_func.h b/src/strings_func.h
--- a/src/strings_func.h
+++ b/src/strings_func.h
@@ -78,4 +78,7 @@ struct StringIDCompare
 
 void CheckForMissingGlyphsInLoadedLanguagePack();
 
+StringID RemapOldStringID(StringID s);
+char *CopyFromOldName(StringID id);
+
 #endif /* STRINGS_TYPE_H */