diff --git a/lib/nss.c b/lib/nss.c
index f39de3bad762915d65fde756a2017d314e7295ae..56290f4b772913b8d898b579443c04d9c1a2871f 100644
--- a/lib/nss.c
+++ b/lib/nss.c
@@ -1171,7 +1171,7 @@ static CURLcode nss_load_ca_certificates(struct connectdata *conn,
 
 CURLcode Curl_nss_connect(struct connectdata *conn, int sockindex)
 {
-  PRInt32 err;
+  PRErrorCode err = 0;
   PRFileDesc *model = NULL;
   PRBool ssl2 = PR_FALSE;
   PRBool ssl3 = PR_FALSE;