diff --git a/src/d_main.c b/src/d_main.c
index 0b65ee0ee..597e3a3da 100644
--- a/src/d_main.c
+++ b/src/d_main.c
@@ -1070,7 +1070,7 @@ static void IdentifyVersion(void)
 #define MUSICTEST(str) \
 	{\
 		const char *musicpath = va(pandf,srb2waddir,str);\
-		int ms = W_VerifyNMUSlumps(musicpath); \
+		int ms = W_VerifyNMUSlumps(musicpath, false); \
 		if (ms == 1) \
 			D_AddFile(startupiwads, musicpath); \
 		else if (ms == 0) \
diff --git a/src/w_wad.c b/src/w_wad.c
index 3bef13a12..5396b1bed 100644
--- a/src/w_wad.c
+++ b/src/w_wad.c
@@ -747,7 +747,14 @@ UINT16 W_InitFile(const char *filename, boolean mainfile, boolean startup)
 	if ((handle = W_OpenWadFile(&filename, true)) == NULL)
 		return W_InitFileError(filename, startup);
 
-	important = !W_VerifyNMUSlumps(filename);
+	important = W_VerifyNMUSlumps(filename, startup);
+
+	if (important == -1)
+	{
+		fclose(handle);
+		return INT16_MAX;
+	}
+
 
 #ifndef NOMD5
 	//