diff --git a/wadsrc/static/zscript/doombase.zs b/wadsrc/static/zscript/doombase.zs
index 1cb0c11512..3e0e80a587 100644
--- a/wadsrc/static/zscript/doombase.zs
+++ b/wadsrc/static/zscript/doombase.zs
@@ -46,6 +46,7 @@ extend struct Translation
 {
 	Color colors[256];
 	
+	native int AddTranslation();
 	native static bool SetPlayerTranslation(int group, int num, int plrnum, PlayerClass pclass);
 	native static int GetID(Name transname);
 }