diff --git a/src/widgets/SlideSwitchButton.cpp b/src/widgets/SlideSwitchButton.cpp
index 6754b2819..6664db707 100644
--- a/src/widgets/SlideSwitchButton.cpp
+++ b/src/widgets/SlideSwitchButton.cpp
@@ -279,7 +279,7 @@ SlideSwitchButton::createKnob()
     p.setPen( QColor( 152, 152, 152 ) );
 
 #ifdef Q_OS_MAC
-    p.drawRoundedRect( m_knob.rect(), 3, 3 );
+    p.drawRoundedRect( m_knob.rect(), 2, 2 );
 #else
     p.drawRoundedRect( m_knob.rect().adjusted( 1, 1, -1, -1 ), 2, 2 );
 #endif