diff --git a/src/rqt_launchtree/launchtree_widget.py b/src/rqt_launchtree/launchtree_widget.py
index 495a08d..3efa459 100644
--- a/src/rqt_launchtree/launchtree_widget.py
+++ b/src/rqt_launchtree/launchtree_widget.py
@@ -213,7 +213,7 @@ def _get_launch_files(self, path):
 	def _is_launch_file(self, path):
 		if not os.path.isfile(path): return False
 		(root, ext) = os.path.splitext(path)
-		if ext != '.launch': return False
+		if ext not in ('.launch', '.test'): return False
 		return True
 
 	def launch_entry_changed(self, current, previous):