diff --git a/smtk/extension/qt/qtOperationLauncher.cxx b/smtk/extension/qt/qtOperationLauncher.cxx
index 68c78f7a25a70817ef7fdcf628bc42a4f02f6457..665248046e9a44ac75997df69d874588f75722ef 100644
--- a/smtk/extension/qt/qtOperationLauncher.cxx
+++ b/smtk/extension/qt/qtOperationLauncher.cxx
@@ -35,6 +35,9 @@ std::future<smtk::operation::Operation::Result> qtOperationLauncher::operator()(
   // Set the promise to the output result.
   promise.set_value(result);
 
+  // Signal that the operation's result is ready for parsing.
+  emit resultReady(result);
+
 #else
 
   // Construct a thread to execute the operation. It takes: