diff --git a/dlls/fltlib/fltlib.c b/dlls/fltlib/fltlib.c
index 50f46accf53..b968c2b25bc 100644
--- a/dlls/fltlib/fltlib.c
+++ b/dlls/fltlib/fltlib.c
@@ -78,14 +78,23 @@ HRESULT WINAPI FilterFindClose(HANDLE handle)
     return S_OK;
 }
 
+/**********************************************************************
+ *      FilterLoad              (FLTLIB.@)
+ */
+HRESULT WINAPI FilterLoad(LPCWSTR filtername)
+{
+    FIXME("(%s) stub\n", debugstr_w(filtername));
+    return HRESULT_FROM_WIN32(ERROR_NOT_SUPPORTED);
+}
+
 /**********************************************************************
  *      FilterUnload            (FLTLIB.@)
  */
-HRESULT WINAPI FilterUnload(LPCWSTR lpFilterName)
+HRESULT WINAPI FilterUnload(LPCWSTR filtername)
 {
-    FIXME("(%s) stub\n", debugstr_w(lpFilterName));
+    FIXME("(%s) stub\n", debugstr_w(filtername));
 
-    if (!lpFilterName)
+    if (!filtername)
         return HRESULT_FROM_WIN32(ERROR_INVALID_PARAMETER);
 
     return S_OK;
diff --git a/dlls/fltlib/fltlib.spec b/dlls/fltlib/fltlib.spec
index 91e803be009..226a61519d1 100644
--- a/dlls/fltlib/fltlib.spec
+++ b/dlls/fltlib/fltlib.spec
@@ -16,7 +16,7 @@
 @ stub FilterInstanceFindFirst
 @ stub FilterInstanceFindNext
 @ stub FilterInstanceGetInformation
-@ stub FilterLoad
+@ stdcall FilterLoad(wstr)
 @ stub FilterReplyMessage
 @ stub FilterSendMessage
 @ stdcall FilterUnload(wstr)