1 files changed, 1 insertions, 1 deletions

diff --git a/src/AFC.c b/src/AFC.c
index 6a6d3f2..6a58686 100644
--- a/src/AFC.c
+++ b/src/AFC.c
@@ -339,7 +339,7 @@ static afc_error_t afc_receive_data(afc_client_t client, char **dump_here, int *
                 *bytes = 0;
 
                 log_debug_msg("%s: WARNING: Unknown operation code received 0x%llx param1=%lld\n", __func__, header.operation, param1);
-                fprintf(stderr, "%s: WARNING: Unknown operation code received 0x%llx param1=%lld\n", __func__, header.operation, param1);
+                fprintf(stderr, "%s: WARNING: Unknown operation code received 0x%llx param1=%lld\n", __func__, (long long)header.operation, (long long)param1);
 
                 return AFC_E_OP_NOT_SUPPORTED;
         }