diff --git a/qga/commands.c b/qga/commands.c
index ce172edd2d..88c1c99fe5 100644
--- a/qga/commands.c
+++ b/qga/commands.c
@@ -154,7 +154,7 @@ GuestExecStatus *qmp_guest_exec_status(int64_t pid, Error **errp)
 
     gei = guest_exec_info_find(pid);
     if (gei == NULL) {
-        error_setg(errp, QERR_INVALID_PARAMETER, "pid");
+        error_setg(errp, "PID " PRId64 " does not exist");
         return NULL;
     }