diff --git a/src/SaveTool/SaveTool_MassViewer_Armour.cpp b/src/SaveTool/SaveTool_MassViewer_Armour.cpp
index d3841b0..08a18be 100644
--- a/src/SaveTool/SaveTool_MassViewer_Armour.cpp
+++ b/src/SaveTool/SaveTool_MassViewer_Armour.cpp
@@ -310,7 +310,7 @@ void SaveTool::drawCustomArmourStyles() {
                 break;
             case DCS_Save:
                 _modifiedBySaveTool = true;
-                if(_currentMass->writeArmourCustomStyle(i)) {
+                if(!_currentMass->writeArmourCustomStyle(i)) {
                     _modifiedBySaveTool = false;
                     _queue.addToast(Toast::Type::Error, _currentMass->lastError());
                 }