diff --git a/GSCache.m b/GSCache.m
index 3da5f4a..9ddbe17 100644
--- a/GSCache.m
+++ b/GSCache.m
@@ -811,7 +811,7 @@ static void removeItem(GSCacheItem *item, GSCacheItem **first)
 
 #if	defined(GNUSTEP_BASE_LIBRARY)
 
-#include	<GNUstepBase/GSMime.h>
+#import	<GNUstepBase/GSMime.h>
 
 @implementation	GSMimeDocument (GSCacheSizeInBytes)
 - (unsigned) sizeInBytes: (NSMutableSet*)exclude
diff --git a/GSIndexedSkipList.m b/GSIndexedSkipList.m
index bb322fa..3350f22 100644
--- a/GSIndexedSkipList.m
+++ b/GSIndexedSkipList.m
@@ -26,7 +26,7 @@
 #include <errno.h>
 #include <stdio.h>
 #include <string.h>
-#include "GSIndexedSkipList.h"
+#import "GSIndexedSkipList.h"
 
 /* This no longer seems to be needed/correct
 #if	defined(__MINGW32__)
diff --git a/GSThreadPool.m b/GSThreadPool.m
index 8dc7382..8f77032 100644
--- a/GSThreadPool.m
+++ b/GSThreadPool.m
@@ -1,9 +1,11 @@
-#include "GSLinkedList.h"
-#include "GSThreadPool.h"
-#include <Foundation/NSAutoreleasePool.h>
-#include <Foundation/NSLock.h>
-#include <Foundation/NSThread.h>
-#include <Foundation/NSException.h>
+#import "GSLinkedList.h"
+#import "GSThreadPool.h"
+#import <Foundation/NSAutoreleasePool.h>
+#import <Foundation/NSDate.h>
+#import <Foundation/NSLock.h>
+#import <Foundation/NSThread.h>
+#import <Foundation/NSString.h>
+#import <Foundation/NSException.h>
 
 @class	GSThreadPool;