diff --git a/src/kits/support/support.src b/src/kits/support/support.src
index c1dfa3e4da..23dd01e671 100644
--- a/src/kits/support/support.src
+++ b/src/kits/support/support.src
@@ -1,7 +1,7 @@
 SUPPORT_KIT_SOURCE =
 	Archivable.cpp
 	BlockCache.cpp
-	#DataIO.cpp
+	DataIO.cpp
 	Flattenable.cpp
 	List.cpp
 	Locker.cpp