diff --git a/drivers/filters/fltmgr/Misc.c b/drivers/filters/fltmgr/Misc.c
index 8643c48882c..c2516af136d 100644
--- a/drivers/filters/fltmgr/Misc.c
+++ b/drivers/filters/fltmgr/Misc.c
@@ -53,4 +53,19 @@ FltGetDiskDeviceObject(
     UNREFERENCED_PARAMETER(Volume);
     UNREFERENCED_PARAMETER(DiskDeviceObject);
     return 0;
-}
\ No newline at end of file
+}
+
+NTSTATUS
+FLTAPI
+FltGetFileNameInformationUnsafe(
+    _In_ PFILE_OBJECT FileObject,
+    _In_opt_ PFLT_INSTANCE Instance,
+    _In_ FLT_FILE_NAME_OPTIONS NameOptions,
+    _Outptr_ PFLT_FILE_NAME_INFORMATION *FileNameInformation)
+{
+    UNREFERENCED_PARAMETER(FileObject);
+    UNREFERENCED_PARAMETER(Instance);
+    UNREFERENCED_PARAMETER(NameOptions);
+    *FileNameInformation = NULL;
+    return 0;
+}
diff --git a/drivers/filters/fltmgr/fltmgr.spec b/drivers/filters/fltmgr/fltmgr.spec
index 916d742ac6e..07063fa1bb1 100644
--- a/drivers/filters/fltmgr/fltmgr.spec
+++ b/drivers/filters/fltmgr/fltmgr.spec
@@ -11,4 +11,5 @@
  @ stdcall FltObjectDereference(ptr)
  @ stdcall FltSendMessage(ptr ptr ptr long ptr ptr ptr)
  @ stdcall FltEnumerateVolumes(ptr ptr long ptr)
+ @ stdcall FltGetFileNameInformationUnsafe(ptr ptr long ptr)