diff --git a/reactos/include/psdk/ks.h b/reactos/include/psdk/ks.h
index 0124acacd68..889c1c6f97f 100644
--- a/reactos/include/psdk/ks.h
+++ b/reactos/include/psdk/ks.h
@@ -3713,6 +3713,17 @@ KsPinGetConnectedPinFileObject(
 */
 
 #if defined(_NTDDK_)
+
+KSDDKAPI
+NTSTATUS
+NTAPI
+KsMergeAutomationTables(
+    OUT PKSAUTOMATION_TABLE* AutomationTableAB,
+    IN PKSAUTOMATION_TABLE AutomationTableA OPTIONAL,
+    IN PKSAUTOMATION_TABLE AutomationTableB OPTIONAL,
+    IN KSOBJECT_BAG Bag OPTIONAL
+    );
+
 KSDDKAPI
 NTSTATUS
 NTAPI