diff --git a/Source/NSScroller.m b/Source/NSScroller.m
index 5f15ade44..dfadb3b51 100644
--- a/Source/NSScroller.m
+++ b/Source/NSScroller.m
@@ -613,9 +613,7 @@ static const float buttonsWidth = 16;
 
       if (theCell)
 	{
-	  [self lockFocus];
 	  [theCell highlight: YES withFrame: rect inView: self];
-	  [self unlockFocus];
 	  [window flushWindow];
 
 	  NSDebugLog (@"tracking cell %x", theCell);
@@ -625,9 +623,7 @@ static const float buttonsWidth = 16;
 				      ofView: self
 				untilMouseUp: YES];
 
-	  [self lockFocus];
 	  [theCell highlight: NO withFrame: rect inView: self];
-	  [self unlockFocus];
 	  [window flushWindow];
 	}
 
diff --git a/Source/NSSlider.m b/Source/NSSlider.m
index 833248c49..fd33e2a5f 100644
--- a/Source/NSSlider.m
+++ b/Source/NSSlider.m
@@ -281,8 +281,6 @@ static Class cellClass;
   NSSliderCell* theCell = [self cell];
   NSRect rect;
 
-  [self lockFocus];
-
   rect = [theCell knobRectFlipped: [self isFlipped]];
   if (![self mouse: location inRect: rect])
     {
@@ -300,7 +298,6 @@ static Class cellClass;
 
   [self trackKnob: theEvent knobRect: rect];
 
-  [self unlockFocus];
 }
 
 @end