diff --git a/crypto/x509/x509_vfy.c b/crypto/x509/x509_vfy.c
index 552d1e725..f60054bd3 100644
--- a/crypto/x509/x509_vfy.c
+++ b/crypto/x509/x509_vfy.c
@@ -453,9 +453,9 @@ static int check_revocation(X509_STORE_CTX *ctx)
 	if (!(ctx->flags & X509_V_FLAG_CRL_CHECK))
 		return 1;
 	if (ctx->flags & X509_V_FLAG_CRL_CHECK_ALL)
-		last = 0;
-	else
 		last = sk_X509_num(ctx->chain) - 1;
+	else
+		last = 0;
 	for(i = 0; i <= last; i++)
 		{
 		ctx->error_depth = i;