diff --git a/engines/scumm/plugin.cpp b/engines/scumm/plugin.cpp
index d9c4e3a4dd5..43abca660a2 100644
--- a/engines/scumm/plugin.cpp
+++ b/engines/scumm/plugin.cpp
@@ -1262,7 +1262,8 @@ static bool testGame(const GameSettings *g, const DescMap &fileMD5Map, const Com
 				// perfect match
 				return true;
 			}
-		} else if (buf[0] == 0xCE && buf[1] == 0xF5) {
+		} else if ((buf[0] == 0xCE && buf[1] == 0xF5) || // PC
+			(buf[0] == 0xCD && buf[1] == 0xFE)) {    // Commodore 64
 			// Looks like V1.
 			// Candidates: maniac classic, zak classic