diff --git a/mozilla/security/nss/lib/pk11wrap/pk11skey.c b/mozilla/security/nss/lib/pk11wrap/pk11skey.c
index 1597d63abe1..b6cf345b4fb 100644
--- a/mozilla/security/nss/lib/pk11wrap/pk11skey.c
+++ b/mozilla/security/nss/lib/pk11wrap/pk11skey.c
@@ -4935,6 +4935,8 @@ PK11_GetPQGParamsFromPrivateKey(SECKEYPrivateKey *privKey)
     return params;
 
 loser:
-    PORT_FreeArena(arena,PR_FALSE);
+    if (arena != NULL) {
+	PORT_FreeArena(arena,PR_FALSE);
+    }
     return NULL;
 }