diff --git a/iphone/TitaniumKit/TitaniumKit/Sources/API/TiBlob.m b/iphone/TitaniumKit/TitaniumKit/Sources/API/TiBlob.m
index 3bb5cdb533b..9dec0f7c927 100644
--- a/iphone/TitaniumKit/TitaniumKit/Sources/API/TiBlob.m
+++ b/iphone/TitaniumKit/TitaniumKit/Sources/API/TiBlob.m
@@ -481,7 +481,7 @@ - (JSValue *)toArrayBuffer
 - (JSValue *)arrayBuffer
 {
   JSContext *context = [self currentContext];
-  KrollPromise *promise = [[KrollPromise alloc] initInContext:context];
+  KrollPromise *promise = [[[KrollPromise alloc] initInContext:context] autorelease];
   TiThreadPerformOnMainThread(
       ^{
         NSData *theData = [self data];