diff --git a/src/d_main.c b/src/d_main.c
index 2d89770db..5a86cc7a6 100644
--- a/src/d_main.c
+++ b/src/d_main.c
@@ -1135,14 +1135,14 @@ void D_SRB2Main(void)
 	//W_VerifyFileMD5(1, ASSET_HASH_ZONES_DTA); // zones.dta
 	//W_VerifyFileMD5(2, ASSET_HASH_PLAYER_DTA); // player.dta
 #ifdef USE_PATCH_DTA
-	W_VerifyFileMD5(4, ASSET_HASH_PATCH_DTA); // patch.dta
+	W_VerifyFileMD5(3, ASSET_HASH_PATCH_DTA); // patch.dta
 #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.
 #endif //ifndef DEVELOP
 
-	mainwads = 4; // there are 4 wads not to unload
+	mainwads = 3; // there are 3 wads not to unload
 #ifdef USE_PATCH_DTA
 	++mainwads; // patch.dta adds one more
 #endif
diff --git a/src/d_netcmd.c b/src/d_netcmd.c
index 1a80f4dc0..5cf83fa3e 100644
--- a/src/d_netcmd.c
+++ b/src/d_netcmd.c
@@ -3242,6 +3242,8 @@ static void Command_ListWADS_f(void)
 			CONS_Printf("\x82 IWAD\x80: %s\n", tempname);
 		else if (i <= mainwads)
 			CONS_Printf("\x82 * %.2d\x80: %s\n", i, tempname);
+		else if (!wadfiles[i]->important)
+			CONS_Printf("\x86   %.2d: %s\n", i, tempname);
 		else
 			CONS_Printf("   %.2d: %s\n", i, tempname);
 	}
diff --git a/src/w_wad.c b/src/w_wad.c
index f7261e5f0..c8701f98f 100644
--- a/src/w_wad.c
+++ b/src/w_wad.c
@@ -1481,12 +1481,12 @@ static int W_VerifyFile(const char *filename, lumpchecklist_t *checklist,
 	if ((handle = W_OpenWadFile(&filename, false)) == NULL)
 		return -1;
 
-	// detect dehacked file with the "soc" extension
-	if (stricmp(&filename[strlen(filename) - 4], ".soc") != 0
+	// detect wad file by the absence of the other supported extensions
+	if (stricmp(&filename[strlen(filename) - 4], ".soc")
 #ifdef HAVE_BLUA
-	&& stricmp(&filename[strlen(filename) - 4], ".lua") != 0
+	&& stricmp(&filename[strlen(filename) - 4], ".lua")
 #endif
-	)
+	&& stricmp(&filename[strlen(filename) - 4], ".pk3"))
 	{
 		// assume wad file
 		wadinfo_t header;