Index: src/OFAutoreleasePool.m
==================================================================
--- src/OFAutoreleasePool.m
+++ src/OFAutoreleasePool.m
@@ -6,10 +6,12 @@
  *
  * This file is part of libobjfw. It may be distributed under the terms of the
  * Q Public License 1.0, which can be found in the file LICENSE included in
  * the packaging of this file.
  */
+
+#import "config.h"
 
 #include <stdlib.h>
 
 #ifndef _WIN32
 #include <pthread.h>

Index: src/OFDictionary.m
==================================================================
--- src/OFDictionary.m
+++ src/OFDictionary.m
@@ -6,10 +6,12 @@
  *
  * This file is part of libobjfw. It may be distributed under the terms of the
  * Q Public License 1.0, which can be found in the file LICENSE included in
  * the packaging of this file.
  */
+
+#import "config.h"
 
 #include <string.h>
 
 #import "OFDictionary.h"
 #import "OFExceptions.h"

Index: src/OFNumber.m
==================================================================
--- src/OFNumber.m
+++ src/OFNumber.m
@@ -6,10 +6,12 @@
  *
  * This file is part of libobjfw. It may be distributed under the terms of the
  * Q Public License 1.0, which can be found in the file LICENSE included in
  * the packaging of this file.
  */
+
+#import "config.h"
 
 #import "OFNumber.h"
 #import "OFExceptions.h"
 
 #define RETURN_AS(t)							      \