1 files changed, 2 insertions, 0 deletions
diff --git a/src/exchange/taler-exchange-httpd_keys.c b/src/exchange/taler-exchange-httpd_keys.c
index 86366eaf..af9274c1 100644
--- a/src/exchange/taler-exchange-httpd_keys.c
+++ b/src/exchange/taler-exchange-httpd_keys.c
@@ -2110,6 +2110,8 @@ TEH_keys_denomination_by_hash2 (
                                           &h_denom_pub->hash);
   if (NULL == dk)
   {
+    if (NULL == conn)
+      return NULL;
     *mret = TEH_RESPONSE_reply_unknown_denom_pub_hash (conn,
                                                        h_denom_pub);
     return NULL;