diff --git a/metal/paddle-mobile/paddle-mobile/Net.swift b/metal/paddle-mobile/paddle-mobile/Net.swift
index 1c90d04fe664c3a72e4e3cba66239208a1071581..ce9ec98a66e685eec3a688a5a29402a76567b0e2 100644
--- a/metal/paddle-mobile/paddle-mobile/Net.swift
+++ b/metal/paddle-mobile/paddle-mobile/Net.swift
@@ -24,7 +24,7 @@ public class ResultHolder: NSObject {
     capacity = inCapacity
   }
   
-  public func releasePointer() {
+  @objc public func releasePointer() {
     result?.deinitialize(count: capacity)
     result?.deallocate()
   }
diff --git a/metal/paddle-mobile/paddle-mobile/PaddleMobileGPU.m b/metal/paddle-mobile/paddle-mobile/PaddleMobileGPU.m
index cb989123bb8edbe962959aa3e4438d67e98d05dc..48f39d0b1bd9f5258712fac40f80668d879bb0b1 100644
--- a/metal/paddle-mobile/paddle-mobile/PaddleMobileGPU.m
+++ b/metal/paddle-mobile/paddle-mobile/PaddleMobileGPU.m
@@ -49,6 +49,7 @@
       [resultArray addObject:[NSNumber numberWithFloat:result.result[i]]];
     }
     completion(success, resultArray);
+    [result releasePointer];
     
   }];
 //  [runner predictWithTexture:texture completion:completion];