diff --git a/MISSING b/MISSING
index 342132094..2c1d0a5d5 100644
--- a/MISSING
+++ b/MISSING
@@ -18,7 +18,6 @@ MISSING HEADERS
 > NSMenuToolbarItem.h
 > NSOpenGLLayer.h
 > NSRuleEditor.h
-> NSSliderAccessory.h
 > NSStackView.h
 > NSTableCellView.h
 > NSTableRowView.h