diff --git a/lib/des/md5.c b/lib/des/md5.c
index f10c754de..df6ac7dc8 100644
--- a/lib/des/md5.c
+++ b/lib/des/md5.c
@@ -236,7 +236,7 @@ MD5_Update (struct md5 *m, const void *v, size_t len)
 void
 MD5_Final (void *res, struct md5 *m)
 {
-  static unsigned char zeros[72];
+  unsigned char zeros[72];
   unsigned offset = (m->sz[0] / 8) % 64;
   unsigned int dstart = (120 - offset - 1) % 64 + 1;