diff --git a/src/platform/DARWIN/AFSPreference/AFSBackgrounder/AFSBackgrounderDelegate.m b/src/platform/DARWIN/AFSPreference/AFSBackgrounder/AFSBackgrounderDelegate.m
index d2d81face4..b636de954e 100644
--- a/src/platform/DARWIN/AFSPreference/AFSBackgrounder/AFSBackgrounderDelegate.m
+++ b/src/platform/DARWIN/AFSPreference/AFSBackgrounder/AFSBackgrounderDelegate.m
@@ -166,10 +166,11 @@
 
 	//get link configuration
 	NSData *prefData = (NSData*)CFPreferencesCopyValue((CFStringRef)PREFERENCE_LINK_CONFIGURATION, (CFStringRef)kAfsCommanderID, kCFPreferencesCurrentUser, kCFPreferencesAnyHost);
-	linkConfiguration = (NSMutableDictionary*)[NSPropertyListSerialization propertyListFromData:prefData
-																			   mutabilityOption:NSPropertyListMutableContainers
-																						 format:nil
-																			   errorDescription:nil];
+	NSDictionary *linkDict = (NSMutableDictionary*)[NSPropertyListSerialization propertyListFromData:prefData
+										    mutabilityOption:NSPropertyListMutableContainers
+										    format:nil
+										    errorDescription:nil];
+	linkConfiguration = [linkDict mutableCopy];
 	
 	//get link enabled status
 	NSNumber *linkEnabledStatus =  (NSNumber*)CFPreferencesCopyValue((CFStringRef)PREFERENCE_USE_LINK, (CFStringRef)kAfsCommanderID, kCFPreferencesCurrentUser, kCFPreferencesAnyHost);
diff --git a/src/platform/DARWIN/AFSPreference/AFSCommanderPref.m b/src/platform/DARWIN/AFSPreference/AFSCommanderPref.m
index dd6d9bfde8..1a06b02289 100644
--- a/src/platform/DARWIN/AFSPreference/AFSCommanderPref.m
+++ b/src/platform/DARWIN/AFSPreference/AFSCommanderPref.m
@@ -332,10 +332,11 @@
 
     //link configuration
     NSData *prefData = (NSData*)CFPreferencesCopyValue((CFStringRef)PREFERENCE_LINK_CONFIGURATION,  (CFStringRef)kAfsCommanderID,  kCFPreferencesCurrentUser, kCFPreferencesAnyHost);
-    linkConfiguration = (NSMutableDictionary*)[NSPropertyListSerialization propertyListFromData:prefData
-									   mutabilityOption:NSPropertyListMutableContainers
-									   format:nil
-									   errorDescription:nil];
+    NSDictionary *linkDict = (NSMutableDictionary*)[NSPropertyListSerialization propertyListFromData:prefData
+										mutabilityOption:NSPropertyListMutableContainers
+										format:nil
+										errorDescription:nil];
+    linkConfiguration = [linkDict mutableCopy];
 }
 
 // -------------------------------------------------------------------------------