diff --git a/src/d_main.c b/src/d_main.c
index d0c2bcfce..dd2cfe0e5 100644
--- a/src/d_main.c
+++ b/src/d_main.c
@@ -1154,7 +1154,7 @@ void D_SRB2Main(void)
 #endif
 	// don't check music.dta because people like to modify it, and it doesn't matter if they do
 	// ...except it does if they slip maps in there, and that's what W_VerifyNMUSlumps is for.
-	mainwads++; // music.dta
+	//mainwads++; // music.dta does not increment mainwads (see <= 2.1.21)
 
 #else
 
@@ -1165,7 +1165,7 @@ void D_SRB2Main(void)
 #ifdef USE_PATCH_DTA
 	mainwads++; // patch.dta
 #endif
-	mainwads++; // music.dta
+	//mainwads++; // music.dta does not increment mainwads (see <= 2.1.21)
 
 #endif //ifndef DEVELOP