diff --git a/Cocoa/GBDeleteButtonCell.h b/Cocoa/GBDeleteButtonCell.h
index 7a2c1e218..08c7e6e36 100644
--- a/Cocoa/GBDeleteButtonCell.h
+++ b/Cocoa/GBDeleteButtonCell.h
@@ -1,9 +1,5 @@
 #import <Cocoa/Cocoa.h>
 
-NS_ASSUME_NONNULL_BEGIN
-
 @interface GBDeleteButtonCell : NSButtonCell
 
 @end
-
-NS_ASSUME_NONNULL_END