diff --git a/libs/util/wadfile.c b/libs/util/wadfile.c
index 0599e5abc..71fe61696 100644
--- a/libs/util/wadfile.c
+++ b/libs/util/wadfile.c
@@ -61,11 +61,12 @@ static __attribute__ ((used)) const char rcsid[] =
 static uintptr_t
 wad_get_hash (void *l, void *unused)
 {
-	char        name[16];
+	char        name[17];
 	int         i;
 
 	for (i = 0; i < 16; i++)
 		name[i] = tolower (((lumpinfo_t *) l)->name[i]);
+	name[16] = 0;
 	return Hash_String (name);
 }