diff --git a/src/Source.def b/src/Source.def
index abd9bd8..c09998c 100644
--- a/src/Source.def
+++ b/src/Source.def
@@ -5,8 +5,8 @@
 
 LIBRARY
 EXPORTS
-    ExEventObjectType
-    IoFileObjectType
+    ExEventObjectType DATA
+    IoFileObjectType DATA
 
     FwpmCalloutAdd0
     FwpmCalloutDeleteByKey0