diff --git a/bundles/org.eclipse.swt/Eclipse SWT PI/cocoa/org/eclipse/swt/internal/cocoa/AppKitFull.bridgesupport.extras b/bundles/org.eclipse.swt/Eclipse SWT PI/cocoa/org/eclipse/swt/internal/cocoa/AppKitFull.bridgesupport.extras
index 8778c0d26a2..50395fd5c0a 100644
--- a/bundles/org.eclipse.swt/Eclipse SWT PI/cocoa/org/eclipse/swt/internal/cocoa/AppKitFull.bridgesupport.extras	
+++ b/bundles/org.eclipse.swt/Eclipse SWT PI/cocoa/org/eclipse/swt/internal/cocoa/AppKitFull.bridgesupport.extras	
@@ -4517,9 +4517,7 @@
 	<enum name="NSRoundLineJoinStyle" swt_gen="true"></enum>
 	<enum name="NSScrollElasticityNone" swt_gen="true"></enum>
 	<enum name="NSScrollWheel" swt_gen="true"></enum>
-	<enum name="NSScrollerDecrementLine" swt_gen="true"></enum>
 	<enum name="NSScrollerDecrementPage" swt_gen="true"></enum>
-	<enum name="NSScrollerIncrementLine" swt_gen="true"></enum>
 	<enum name="NSScrollerIncrementPage" swt_gen="true"></enum>
 	<enum name="NSScrollerKnob" swt_gen="true"></enum>
 	<enum name="NSScrollerKnobSlot" swt_gen="true"></enum>
diff --git a/bundles/org.eclipse.swt/Eclipse SWT PI/cocoa/org/eclipse/swt/internal/cocoa/OS.java b/bundles/org.eclipse.swt/Eclipse SWT PI/cocoa/org/eclipse/swt/internal/cocoa/OS.java
index bfe161cc67b..025253b0276 100644
--- a/bundles/org.eclipse.swt/Eclipse SWT PI/cocoa/org/eclipse/swt/internal/cocoa/OS.java	
+++ b/bundles/org.eclipse.swt/Eclipse SWT PI/cocoa/org/eclipse/swt/internal/cocoa/OS.java	
@@ -2291,9 +2291,7 @@ public static Selector getSelector (long value) {
 public static final int NSRoundLineJoinStyle = 1;
 public static final int NSScrollElasticityNone = 1;
 public static final int NSScrollWheel = 22;
-public static final int NSScrollerDecrementLine = 4;
 public static final int NSScrollerDecrementPage = 1;
-public static final int NSScrollerIncrementLine = 5;
 public static final int NSScrollerIncrementPage = 3;
 public static final int NSScrollerKnob = 2;
 public static final int NSScrollerKnobSlot = 6;
diff --git a/bundles/org.eclipse.swt/Eclipse SWT/cocoa/org/eclipse/swt/widgets/ScrollBar.java b/bundles/org.eclipse.swt/Eclipse SWT/cocoa/org/eclipse/swt/widgets/ScrollBar.java
index ea25420fec6..8e29470b678 100644
--- a/bundles/org.eclipse.swt/Eclipse SWT/cocoa/org/eclipse/swt/widgets/ScrollBar.java	
+++ b/bundles/org.eclipse.swt/Eclipse SWT/cocoa/org/eclipse/swt/widgets/ScrollBar.java	
@@ -481,18 +481,10 @@ void sendSelection () {
 	int hitPart = (int)((NSScroller)view).testPart(point);
 	Event event = new Event();
 	switch (hitPart) {
-	case OS.NSScrollerDecrementLine:
-		value -= increment;
-		event.detail = SWT.ARROW_UP;
-		break;
 	case OS.NSScrollerDecrementPage:
 		value -= pageIncrement;
 		event.detail = SWT.PAGE_UP;
 		break;
-	case OS.NSScrollerIncrementLine:
-		value += increment;
-		event.detail = SWT.ARROW_DOWN;
-		break;
 	case OS.NSScrollerIncrementPage:
 		value += pageIncrement;
 		event.detail = SWT.PAGE_DOWN;
diff --git a/bundles/org.eclipse.swt/Eclipse SWT/cocoa/org/eclipse/swt/widgets/Slider.java b/bundles/org.eclipse.swt/Eclipse SWT/cocoa/org/eclipse/swt/widgets/Slider.java
index 43e73d710fb..a6490a86622 100644
--- a/bundles/org.eclipse.swt/Eclipse SWT/cocoa/org/eclipse/swt/widgets/Slider.java	
+++ b/bundles/org.eclipse.swt/Eclipse SWT/cocoa/org/eclipse/swt/widgets/Slider.java	
@@ -333,18 +333,10 @@ void sendSelection () {
 	int hitPart = (int)((NSScroller)view).hitPart();
 	int value = getSelection ();
 	switch (hitPart) {
-		case OS.NSScrollerDecrementLine:
-			event.detail = SWT.ARROW_UP;
-			value -= increment;
-			break;
 		case OS.NSScrollerDecrementPage:
 			value -= pageIncrement;
 			event.detail = SWT.PAGE_UP;
 			break;
-		case OS.NSScrollerIncrementLine:
-			value += increment;
-			event.detail = SWT.ARROW_DOWN;
-			break;
 		case OS.NSScrollerIncrementPage:
 			value += pageIncrement;
 			event.detail = SWT.PAGE_DOWN;