diff --git a/GCDTask.h b/GCDTask.h
old mode 100644
new mode 100755
index 028bb41..614e980
--- a/GCDTask.h
+++ b/GCDTask.h
@@ -35,11 +35,11 @@
 - (void) launchWithOutputBlock: (void (^)(NSData* stdOutData)) stdOut
                 andErrorBlock: (void (^)(NSData* stdErrData)) stdErr
                      onLaunch: (void (^)()) launched
-                       onExit: (void (^)()) exit;
+                       onExit: (void (^)(int)) exit;
 
 - (BOOL) WriteStringToStandardInput: (NSString*) input;
 - (BOOL) WriteDataToStandardInput: (NSData*) input;
 - (void) AddArgument: (NSString*) argument;
 - (void) RequestTermination;
 
-@end
\ No newline at end of file
+@end
diff --git a/GCDTask.m b/GCDTask.m
old mode 100644
new mode 100755
index 8a8a75d..a2b2a06
--- a/GCDTask.m
+++ b/GCDTask.m
@@ -18,7 +18,7 @@ - (id) init
 - (void) launchWithOutputBlock: (void (^)(NSData* stdOutData)) stdOut
                  andErrorBlock: (void (^)(NSData* stdErrData)) stdErr
                       onLaunch: (void (^)()) launched
-                        onExit: (void (^)()) exit
+                        onExit: (void (^)(int)) exit
 {
     executingTask = [[NSTask alloc] init];
  
@@ -106,7 +106,7 @@ - (void) launchWithOutputBlock: (void (^)(NSData* stdOutData)) stdOut
             dispatch_source_cancel(_stdoutSource);
             dispatch_async(dispatch_get_main_queue(), ^{
                 if(exit)
-                    exit();
+                    exit([executingTask terminationStatus]);
             });
         }
 
@@ -153,7 +153,7 @@ - (void) launchWithOutputBlock: (void (^)(NSData* stdOutData)) stdOut
         dispatch_source_cancel(_stdoutSource);
         dispatch_source_cancel(_stderrSource);
         if(exit)
-            exit();
+            exit([executingTask terminationStatus]);
     };
 
     [executingTask launch];