diff --git a/tools/perf/util/thread.c b/tools/perf/util/thread.c
index 49eaf1d7d89d0554a146a272e923cd139e6cbac7..e3948612543e9faabc62cdf8fd2c7cd364568c6a 100644
--- a/tools/perf/util/thread.c
+++ b/tools/perf/util/thread.c
@@ -126,7 +126,7 @@ int thread__fork(struct thread *thread, struct thread *parent, u64 timestamp)
 		if (!comm)
 			return -ENOMEM;
 		err = thread__set_comm(thread, comm, timestamp);
-		if (!err)
+		if (err)
 			return err;
 		thread->comm_set = true;
 	}