diff --git a/src/task.c b/src/task.c
index 6580bf4a6b5c0ecb4e0265e2d3927ac0b7000ae4..13ce88452cbc6872087ff71f8100260c1dda308f 100644
--- a/src/task.c
+++ b/src/task.c
@@ -412,8 +412,8 @@ int task_lock(struct task *t) {
         char buff[MPI_MAX_ERROR_STRING];
         int len;
         MPI_Error_string(err, buff, &len);
-        error("Failed to test request on send/recv task (tag=%lld, %s).",
-              t->flags, buff);
+        error("Failed to test request on send/recv task (type=%s/%s tag=%lld, %s).",
+              taskID_names[t->type], subtaskID_names[t->subtype], t->flags, buff);
       }
       return res;
 #else