diff --git a/frameworks/inputmethod_ability/src/input_method_agent_proxy.cpp b/frameworks/inputmethod_ability/src/input_method_agent_proxy.cpp
index 62abd35..357d2f5 100644
--- a/frameworks/inputmethod_ability/src/input_method_agent_proxy.cpp
+++ b/frameworks/inputmethod_ability/src/input_method_agent_proxy.cpp
@@ -84,7 +84,7 @@ namespace MiscServices {
             return;
         }
 
-        data.WriteInt32(windowId);
+        data.WriteUint32(windowId);
         Remote()->SendRequest(SET_CALLING_WINDOW_ID, data, reply, option);
     }
 } // namespace MiscServices
diff --git a/frameworks/inputmethod_ability/src/input_method_agent_stub.cpp b/frameworks/inputmethod_ability/src/input_method_agent_stub.cpp
index d9bc285..e3d8f4e 100644
--- a/frameworks/inputmethod_ability/src/input_method_agent_stub.cpp
+++ b/frameworks/inputmethod_ability/src/input_method_agent_stub.cpp
@@ -48,7 +48,7 @@ namespace MiscServices {
                 break;
             }
             case SET_CALLING_WINDOW_ID: {
-                uint32_t windowId = data.ReadInt32;
+                uint32_t windowId = data.ReadUint32();
                 SetCallingWindow(windowId);
             }
             case ON_CURSOR_UPDATE: {
@@ -89,7 +89,7 @@ namespace MiscServices {
     {
         IMSA_HILOGI("InputMethodAgentStub::SetCallingWindow");
         if (!msgHandler_) {
-            return false;
+            return;
         }
         InputMethodAbility::GetInstance()->SetCallingWindow(windowId);
         return;