diff --git a/poky/meta/lib/oeqa/utils/commands.py b/poky/meta/lib/oeqa/utils/commands.py
index df373c4..f7f8c16 100644
--- a/poky/meta/lib/oeqa/utils/commands.py
+++ b/poky/meta/lib/oeqa/utils/commands.py
@@ -95,7 +95,9 @@
         # reason, the main process will still exit, which will then
         # kill the write thread.
         if self.data:
-            threading.Thread(target=writeThread, daemon=True).start()
+            thread = threading.Thread(target=writeThread, daemon=True)
+            thread.start()
+            self.threads.append(thread)
         if self.process.stderr:
             thread = threading.Thread(target=readStderrThread)
             thread.start()