diff --git a/include/QF/sys.h b/include/QF/sys.h
index 3dd38bb87..e1b440353 100644
--- a/include/QF/sys.h
+++ b/include/QF/sys.h
@@ -77,9 +77,12 @@ double Sys_DoubleTime (void);
 void Sys_TimeOfDay(date_t *date);
 
 void Sys_MaskPrintf (int mask, const char *fmt, ...) __attribute__((format(printf,2,3)));
-#define SYS_DEV		1
-#define SYS_WARN	3	// bit 0 so developer 1 will pick it up
-#define SYS_VID		5
+#define SYS_DEV		(1|0)
+#define SYS_WARN	(1|2)	// bit 0 so developer 1 will pick it up
+#define SYS_VID		(1|4)
+#define SYS_FS_NF   (1|8)
+#define SYS_FS_F    (1|16)
+#define SYS_FS      (1|32)
 
 int Sys_CheckInput (int idle, int net_socket);
 const char *Sys_ConsoleInput (void);
diff --git a/libs/util/quakefs.c b/libs/util/quakefs.c
index 01f6c3934..0898a7dd9 100644
--- a/libs/util/quakefs.c
+++ b/libs/util/quakefs.c
@@ -549,15 +549,15 @@ qfs_build_gamedir (const char **list)
 		gamedir->dir.maps = nva ("%s/maps", gamedir->dir.def);
 
 	qfs_gamedir = gamedir;
-	Sys_MaskPrintf (SYS_DEV, "%s\n", qfs_gamedir->name);
-	Sys_MaskPrintf (SYS_DEV, "    gamedir : %s\n", qfs_gamedir->gamedir);
-	Sys_MaskPrintf (SYS_DEV, "    path    : %s\n", qfs_gamedir->path);
-	Sys_MaskPrintf (SYS_DEV, "    gamecode: %s\n", qfs_gamedir->gamecode);
-	Sys_MaskPrintf (SYS_DEV, "    def     : %s\n", qfs_gamedir->dir.def);
-	Sys_MaskPrintf (SYS_DEV, "    skins   : %s\n", qfs_gamedir->dir.skins);
-	Sys_MaskPrintf (SYS_DEV, "    models  : %s\n", qfs_gamedir->dir.models);
-	Sys_MaskPrintf (SYS_DEV, "    sound   : %s\n", qfs_gamedir->dir.sound);
-	Sys_MaskPrintf (SYS_DEV, "    maps    : %s\n", qfs_gamedir->dir.maps);
+	Sys_MaskPrintf (SYS_FS, "%s\n", qfs_gamedir->name);
+	Sys_MaskPrintf (SYS_FS, "    gamedir : %s\n", qfs_gamedir->gamedir);
+	Sys_MaskPrintf (SYS_FS, "    path    : %s\n", qfs_gamedir->path);
+	Sys_MaskPrintf (SYS_FS, "    gamecode: %s\n", qfs_gamedir->gamecode);
+	Sys_MaskPrintf (SYS_FS, "    def     : %s\n", qfs_gamedir->dir.def);
+	Sys_MaskPrintf (SYS_FS, "    skins   : %s\n", qfs_gamedir->dir.skins);
+	Sys_MaskPrintf (SYS_FS, "    models  : %s\n", qfs_gamedir->dir.models);
+	Sys_MaskPrintf (SYS_FS, "    sound   : %s\n", qfs_gamedir->dir.sound);
+	Sys_MaskPrintf (SYS_FS, "    maps    : %s\n", qfs_gamedir->dir.maps);
 	qfs_process_path (qfs_gamedir->path, dir);
 	free (path);
 	Hash_DelTable (dirs);
@@ -575,7 +575,7 @@ qfs_load_config (void)
 	if (*fs_dirconf->string) {
 		dirconf = Sys_ExpandSquiggle (fs_dirconf->string);
 		if (!(f = Qopen (dirconf, "rt")))
-			Sys_MaskPrintf (SYS_DEV,
+			Sys_MaskPrintf (SYS_FS,
 							"Could not load `%s', using builtin defaults\n",
 							dirconf);
 		free (dirconf);
@@ -827,7 +827,7 @@ open_file (searchpath_t *search, const char *filename, QFile **gzfile,
 
 		packfile = pack_find_file (search->pack, filename);
 		if (packfile) {
-			Sys_MaskPrintf (SYS_DEV, "PackFile: %s : %s\n",
+			Sys_MaskPrintf (SYS_FS_F, "PackFile: %s : %s\n",
 							search->pack->filename, packfile->name);
 			// open a new file on the pakfile
 			if (foundname) {
@@ -853,7 +853,7 @@ open_file (searchpath_t *search, const char *filename, QFile **gzfile,
 				return -1;
 			}
 
-			Sys_MaskPrintf (SYS_DEV, "FindFile: %s\n", netpath->str);
+			Sys_MaskPrintf (SYS_FS_F, "FindFile: %s\n", netpath->str);
 
 			*gzfile = qfs_openread (netpath->str, -1, -1, zip);
 			dstring_delete (netpath);
@@ -882,7 +882,7 @@ _QFS_FOpenFile (const char *filename, QFile **gzfile,
 	// make sure they're not trying to do weird stuff with our private files
 	path = QFS_CompressPath (filename);
 	if (qfs_contains_updir(path, 1)) {
-		Sys_MaskPrintf (SYS_DEV,
+		Sys_MaskPrintf (SYS_FS,
 						"FindFile: %s: attempt to escape directory tree!\n",
 						path);
 		goto error;
@@ -919,7 +919,7 @@ _QFS_FOpenFile (const char *filename, QFile **gzfile,
 			goto ok;
 	}
 
-	Sys_MaskPrintf (SYS_DEV, "FindFile: can't find %s\n", filename);
+	Sys_MaskPrintf (SYS_FS_NF, "FindFile: can't find %s\n", filename);
 error:
 	*gzfile = NULL;
 	qfs_filesize = -1;
@@ -1030,7 +1030,7 @@ qfs_load_pakfile (char *packfile)
 	pack_t     *pack = pack_open (packfile);
 
 	if (pack)
-		Sys_MaskPrintf (SYS_DEV, "Added packfile %s (%i files)\n",
+		Sys_MaskPrintf (SYS_FS, "Added packfile %s (%i files)\n",
 					packfile, pack->numfiles);
 	return pack;
 }
@@ -1080,7 +1080,7 @@ qfs_load_gamedir (const char *dir)
 	char      **pakfiles = NULL;
 	int         i = 0, bufsize = 0, count = 0;
 
-	Sys_MaskPrintf (SYS_DEV, "qfs_load_gamedir (\"%s\")\n", dir);
+	Sys_MaskPrintf (SYS_FS, "qfs_load_gamedir (\"%s\")\n", dir);
 
 	pakfiles = calloc (1, FBLOCK_SIZE * sizeof (char *));
 
@@ -1188,7 +1188,7 @@ qfs_add_gamedir (const char *dir)
 					Sys_Printf ("dropping bad directory %s\n", dir);
 					break;
 				}
-				Sys_MaskPrintf (SYS_DEV, "qfs_add_gamedir (\"%s\")\n",
+				Sys_MaskPrintf (SYS_FS, "qfs_add_gamedir (\"%s\")\n",
 								f_dir->str);
 
 				qfs_add_dir (f_dir->str);
@@ -1198,7 +1198,7 @@ qfs_add_gamedir (const char *dir)
 	}
 
 	qfs_expand_userpath (f_dir, dir);
-	Sys_MaskPrintf (SYS_DEV, "qfs_add_gamedir (\"%s\")\n", f_dir->str);
+	Sys_MaskPrintf (SYS_FS, "qfs_add_gamedir (\"%s\")\n", f_dir->str);
 	qfs_add_dir (f_dir->str);
 
 	dstring_delete (f_dir);
@@ -1413,7 +1413,7 @@ QFS_Open (const char *path, const char *mode)
 	int         write = 0;
 
 	if (qfs_expand_userpath (full_path, path) == 0) {
-		Sys_MaskPrintf (SYS_DEV, "QFS_Open: %s %s\n", full_path->str, mode);
+		Sys_MaskPrintf (SYS_FS, "QFS_Open: %s %s\n", full_path->str, mode);
 		for (m = mode; *m; m++)
 			if (*m == 'w' || *m == '+' || *m == 'a')
 				write = 1;