diff --git a/source/core/music/s_advsound.cpp b/source/core/music/s_advsound.cpp
index bb2bf043c..11c753971 100644
--- a/source/core/music/s_advsound.cpp
+++ b/source/core/music/s_advsound.cpp
@@ -428,7 +428,7 @@ static void S_AddSNDINFO (int lump)
 			{ // Got a logical sound mapping
 				if (sc.String[0] == '$')
 				{
-					sc.ScriptError("%s: Unknown keyword");
+					sc.ScriptError("%s: Unknown keyword", sc.String);
 				}
 				FString name (sc.String);
 				if (wantassigns == -1)