Index: src/OFArray.h
==================================================================
--- src/OFArray.h
+++ src/OFArray.h
@@ -502,9 +502,9 @@
 
 OF_ASSUME_NONNULL_END
 
 #import "OFMutableArray.h"
 
-#ifndef NSINTEGER_DEFINED
+#if !defined(NSINTEGER_DEFINED) && !__has_feature(modules)
 /* Required for array literals to work */
 @compatibility_alias NSArray OFArray;
 #endif

Index: src/OFDictionary.h
==================================================================
--- src/OFDictionary.h
+++ src/OFDictionary.h
@@ -312,9 +312,9 @@
 
 OF_ASSUME_NONNULL_END
 
 #import "OFMutableDictionary.h"
 
-#ifndef NSINTEGER_DEFINED
+#if !defined(NSINTEGER_DEFINED) && !__has_feature(modules)
 /* Required for dictionary literals to work */
 @compatibility_alias NSDictionary OFDictionary;
 #endif

Index: src/OFNumber.h
==================================================================
--- src/OFNumber.h
+++ src/OFNumber.h
@@ -810,9 +810,9 @@
 - (double)doubleValue;
 @end
 
 OF_ASSUME_NONNULL_END
 
-#ifndef NSINTEGER_DEFINED
+#if !defined(NSINTEGER_DEFINED) && !__has_feature(modules)
 /* Required for number literals to work */
 @compatibility_alias NSNumber OFNumber;
 #endif

Index: src/OFString.h
==================================================================
--- src/OFString.h
+++ src/OFString.h
@@ -1131,11 +1131,11 @@
 #import "OFString+Serialization.h"
 #import "OFString+URLEncoding.h"
 #import "OFString+XMLEscaping.h"
 #import "OFString+XMLUnescaping.h"
 
-#ifndef NSINTEGER_DEFINED
+#if !defined(NSINTEGER_DEFINED) && !__has_feature(modules)
 /*
  * Very *ugly* hack required for string boxing literals to work.
  *
  * This hack is needed in order to work with `@class NSString` from Apple's
  * objc/NSString.h - which is included when using modules - as