diff --git a/include/binder/IInterface.h b/include/binder/IInterface.h
index 4ce3613..48c8b3b 100644
--- a/include/binder/IInterface.h
+++ b/include/binder/IInterface.h
@@ -105,7 +105,7 @@
 
 
 #define CHECK_INTERFACE(interface, data, reply)                         \
-    if (!data.checkInterface(this)) { return PERMISSION_DENIED; }       \
+    if (!(data).checkInterface(this)) { return PERMISSION_DENIED; }     \
 
 
 // ----------------------------------------------------------------------