diff --git a/lib/System/ThreadLocal.cpp b/lib/System/ThreadLocal.cpp
index b0c7fa5..e7054b5 100644
--- a/lib/System/ThreadLocal.cpp
+++ b/lib/System/ThreadLocal.cpp
@@ -44,7 +44,7 @@
   int errorcode = pthread_key_create(key, NULL);
   assert(errorcode == 0);
   (void) errorcode;
-  data = static_cast<void*>(key);
+  data = (void*)key;
 }
 
 ThreadLocalImpl::~ThreadLocalImpl() {