diff --git a/src/Gui/BlenderNavigationStyle.cpp b/src/Gui/BlenderNavigationStyle.cpp
index 269dbfdb49..cb6775ccf8 100644
--- a/src/Gui/BlenderNavigationStyle.cpp
+++ b/src/Gui/BlenderNavigationStyle.cpp
@@ -256,10 +256,13 @@ SbBool BlenderNavigationStyle::processSoEvent(const SoEvent * const ev)
     case BUTTON1DOWN:
     case CTRLDOWN|BUTTON1DOWN:
         // make sure not to change the selection when stopping spinning
-        if (curmode == NavigationStyle::SPINNING || this->lockButton1 && curmode != NavigationStyle::SELECTION)
+        if (curmode == NavigationStyle::SPINNING
+            || (this->lockButton1 && curmode != NavigationStyle::SELECTION)) {
             newmode = NavigationStyle::IDLE;
-        else
+        }
+        else {
             newmode = NavigationStyle::SELECTION;
+        }
         break;
     case BUTTON1DOWN|BUTTON2DOWN:
         newmode = NavigationStyle::PANNING;