diff --git a/libs/binder/ProcessState.cpp b/libs/binder/ProcessState.cpp
index c1e49bc..0163906 100644
--- a/libs/binder/ProcessState.cpp
+++ b/libs/binder/ProcessState.cpp
@@ -86,7 +86,7 @@
     setContextObject(object, String16("default"));
 }
 
-sp<IBinder> ProcessState::getContextObject(const sp<IBinder>& caller)
+sp<IBinder> ProcessState::getContextObject(const sp<IBinder>& /*caller*/)
 {
     return getStrongProxyForHandle(0);
 }