diff --git a/SDImageCache.m b/SDImageCache.m
index 33911209..6de0e5bb 100644
--- a/SDImageCache.m
+++ b/SDImageCache.m
@@ -41,7 +41,8 @@ static SDImageCache *instance;
         cacheInQueue.maxConcurrentOperationCount = 1;
         cacheOutQueue = [[NSOperationQueue alloc] init];
         cacheOutQueue.maxConcurrentOperationCount = 1;
-
+#if !TARGET_OS_IPHONE
+#else
         // Subscribe to app events
         [[NSNotificationCenter defaultCenter] addObserver:self
                                                  selector:@selector(clearMemory)
@@ -64,6 +65,7 @@ static SDImageCache *instance;
                                                        object:nil];
         }
         #endif
+#endif
     }
 
     return self;
@@ -98,7 +100,7 @@ static SDImageCache *instance;
 {
     const char *str = [key UTF8String];
     unsigned char r[CC_MD5_DIGEST_LENGTH];
-    CC_MD5(str, strlen(str), r);
+    CC_MD5(str, (CC_LONG)strlen(str), r);
     NSString *filename = [NSString stringWithFormat:@"%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
                           r[0], r[1], r[2], r[3], r[4], r[5], r[6], r[7], r[8], r[9], r[10], r[11], r[12], r[13], r[14], r[15]];
 
@@ -124,8 +126,14 @@ static SDImageCache *instance;
         UIImage *image = [[self imageFromKey:key fromDisk:YES] retain]; // be thread safe with no lock
         if (image)
         {
+#if !TARGET_OS_IPHONE
+            NSArray*  representations  = [image representations];
+            NSData* jpegData = [NSBitmapImageRep representationOfImageRepsInArray: representations usingType: NSJPEGFileType properties:nil];
+            [fileManager createFileAtPath:[self cachePathForKey:key] contents:jpegData attributes:nil];
+#else
             [fileManager createFileAtPath:[self cachePathForKey:key] contents:UIImageJPEGRepresentation(image, (CGFloat)1.0) attributes:nil];
             [image release];
+#endif
         }
     }
 
diff --git a/SDImageCacheDelegate.h b/SDImageCacheDelegate.h
index 947a90ad..85d1d16b 100644
--- a/SDImageCacheDelegate.h
+++ b/SDImageCacheDelegate.h
@@ -6,7 +6,7 @@
 //  Copyright 2010 Dailymotion. All rights reserved.
 //
 
-#import <UIKit/UIKit.h>
+#import "SDWebImageCompat.h"
 
 @class SDImageCache;
 
diff --git a/SDWebImageCompat.h b/SDWebImageCompat.h
new file mode 100644
index 00000000..24effc4d
--- /dev/null
+++ b/SDWebImageCompat.h
@@ -0,0 +1,21 @@
+//
+//  SDWebImageCompat.h
+//  SDWebImageCompat
+//
+//  Created by Jamie Pinkham on 3/15/11.
+//  Copyright 2011 __MyCompanyName__. All rights reserved.
+//
+
+#import <TargetConditionals.h>
+
+#if !TARGET_OS_IPHONE
+#import <AppKit/AppKit.h>
+#ifndef UIImage
+#define UIImage NSImage
+#endif
+#ifndef UIImageView
+#define UIImageView NSImageView
+#endif
+#else
+#import <UIKit/UIKit.h>
+#endif
diff --git a/SDWebImageDownloader.h b/SDWebImageDownloader.h
index 863a2e3c..0534406a 100644
--- a/SDWebImageDownloader.h
+++ b/SDWebImageDownloader.h
@@ -8,6 +8,7 @@
 
 #import <Foundation/Foundation.h>
 #import "SDWebImageDownloaderDelegate.h"
+#import "SDWebImageCompat.h"
 
 extern NSString *const SDWebImageDownloadStartNotification;
 extern NSString *const SDWebImageDownloadStopNotification;
diff --git a/SDWebImageDownloaderDelegate.h b/SDWebImageDownloaderDelegate.h
index 08939be9..c33f87b0 100644
--- a/SDWebImageDownloaderDelegate.h
+++ b/SDWebImageDownloaderDelegate.h
@@ -6,6 +6,8 @@
  * file that was distributed with this source code.
  */
 
+#import "SDWebImageCompat.h"
+
 @class SDWebImageDownloader;
 
 @protocol SDWebImageDownloaderDelegate <NSObject>
diff --git a/SDWebImageManager.h b/SDWebImageManager.h
index 256de0b8..96809fac 100644
--- a/SDWebImageManager.h
+++ b/SDWebImageManager.h
@@ -6,7 +6,7 @@
  * file that was distributed with this source code.
  */
 
-#import <UIKit/UIKit.h>
+#import "SDWebImageCompat.h"
 #import "SDWebImageDownloaderDelegate.h"
 #import "SDWebImageManagerDelegate.h"
 #import "SDImageCacheDelegate.h"
diff --git a/UIImageView+WebCache.h b/UIImageView+WebCache.h
index 517735f5..9d93a8ef 100644
--- a/UIImageView+WebCache.h
+++ b/UIImageView+WebCache.h
@@ -6,7 +6,7 @@
  * file that was distributed with this source code.
  */
 
-#import <UIKit/UIKit.h>
+#import "SDWebImageCompat.h"
 #import "SDWebImageManagerDelegate.h"
 
 @interface UIImageView (WebCache) <SDWebImageManagerDelegate>