diff --git a/reactos/include/psdk/ks.h b/reactos/include/psdk/ks.h
index 5c9ac50834d..cbbdc8b37dd 100644
--- a/reactos/include/psdk/ks.h
+++ b/reactos/include/psdk/ks.h
@@ -3747,8 +3747,8 @@ KsGetParent(
     );
 
 
-PKSFILTERFACTORY
 static
+PKSFILTERFACTORY
 __inline
 KsFilterGetParentFilterFactory(
     IN PKSFILTER Filter
@@ -3757,6 +3757,17 @@ KsFilterGetParentFilterFactory(
     return (PKSFILTERFACTORY) KsGetParent((PVOID) Filter);
 }
 
+static
+PKSDEVICE
+__inline
+KsFilterFactoryGetParentDevice(
+    IN PKSFILTERFACTORY FilterFactory
+    )
+{
+    return (PKSDEVICE) KsGetParent((PVOID) FilterFactory);
+}
+
+
 
 #define KsDeleteFilterFactory(FilterFactory)                                           \
             KsFreeObjectCreateItemsByContext(                                          \