1 files changed, 1 insertions, 1 deletions

diff --git a/lib/libc/stdio/mktemp.c b/lib/libc/stdio/mktemp.c
index 870e4db37597..c5ade5335e0c 100644
--- a/lib/libc/stdio/mktemp.c
+++ b/lib/libc/stdio/mktemp.c
@@ -128,7 +128,7 @@ _gettemp(path, doopen, domkdir, slen)
 	}
 
 	/* Fill space with random characters */
-	while (*trv == 'X') {
+	while (trv >= path && *trv == 'X') {
 		rand = arc4random() % (sizeof(padchar) - 1);
 		*trv-- = padchar[rand];
 	}