diff --git a/reactos/include/psdk/ks.h b/reactos/include/psdk/ks.h
index 8bda702b6c4..0fb701d92dc 100644
--- a/reactos/include/psdk/ks.h
+++ b/reactos/include/psdk/ks.h
@@ -3641,6 +3641,14 @@ KsAddItemToObjectBag(
     IN  PVOID Item,
     IN  PFNKSFREE Free OPTIONAL);
 
+KSDDKAPI
+ULONG
+NTAPI
+KsRemoveItemFromObjectBag(
+    IN KSOBJECT_BAG ObjectBag,
+    IN PVOID Item,
+    IN BOOLEAN Free);
+
 KSDDKAPI
 NTSTATUS
 NTAPI