diff --git a/src/BlocksRuntime/BlocksRuntime.def b/src/BlocksRuntime/BlocksRuntime.def
index a3b1aab..3e1f033 100644
--- a/src/BlocksRuntime/BlocksRuntime.def
+++ b/src/BlocksRuntime/BlocksRuntime.def
@@ -1,4 +1,4 @@
-LIBRARY BlocksRuntime
+LIBRARY libBlocksRuntime
 EXPORTS
   _NSConcreteGlobalBlock CONSTANT
   _NSConcreteStackBlock CONSTANT