diff --git a/src/AutoPilotPlugins/APM/APMAirframeComponentController.cc b/src/AutoPilotPlugins/APM/APMAirframeComponentController.cc
index 4cb5ce43d7b5ca893e623d662cc16a8ad7d0e7d7..0a7a8517dc89915b8423a5561ab834cc2d12b46d 100644
--- a/src/AutoPilotPlugins/APM/APMAirframeComponentController.cc
+++ b/src/AutoPilotPlugins/APM/APMAirframeComponentController.cc
@@ -244,6 +244,6 @@ void APMAirframeComponentController::_paramFileDownloadFinished(QString remoteFi
 
 void APMAirframeComponentController::_paramFileDownloadError(QString errorMsg)
 {
-    qgcApp()->showMessage(tr("Param file download failed: % 1").arg(errorMsg));
+    qgcApp()->showMessage(tr("Param file download failed: %1").arg(errorMsg));
     qgcApp()->restoreOverrideCursor();
 }