diff --git a/dlls/atl/atl.spec b/dlls/atl/atl.spec
index ce283384e1a..7a0499eafb5 100644
--- a/dlls/atl/atl.spec
+++ b/dlls/atl/atl.spec
@@ -48,5 +48,5 @@
 54 stub AtlGetObjectSourceInterface
 55 stub AtlModuleUnRegisterTypeLib
 56 stub AtlModuleLoadTypeLib
-57 stub AtlModuleUnregisterServerEx
+57 stdcall AtlModuleUnregisterServerEx(ptr long ptr)
 58 stub AtlModuleAddTermFunc
diff --git a/dlls/atl/atl_main.c b/dlls/atl/atl_main.c
index 4ba2aa39f4f..6b1c3100eb8 100644
--- a/dlls/atl/atl_main.c
+++ b/dlls/atl/atl_main.c
@@ -109,6 +109,12 @@ HRESULT WINAPI AtlModuleRegisterClassObjects(_ATL_MODULEA *pM, DWORD dwClsContex
    return hRes;
 }
 
+HRESULT WINAPI AtlModuleUnregisterServerEx(_ATL_MODULEA* pM, BOOL bUnRegTypeLib, const CLSID* pCLSID)
+{
+    FIXME("(%p, %i, %p) stub\n", pM, bUnRegTypeLib, pCLSID);
+    return S_OK;
+}
+
 HRESULT WINAPI AtlInternalQueryInterface(LPVOID this, const _ATL_INTMAP_ENTRY* pEntries,  REFIID iid, LPVOID* ppvObject)
 {
     int i = 0;
diff --git a/dlls/atl/atlbase.h b/dlls/atl/atlbase.h
index 7d3fc22fb5d..8715f358a11 100644
--- a/dlls/atl/atlbase.h
+++ b/dlls/atl/atlbase.h
@@ -130,6 +130,7 @@ typedef struct _ATL_INTMAP_ENTRY_TAG
 
 HRESULT WINAPI AtlModuleInit(_ATL_MODULEA* pM, _ATL_OBJMAP_ENTRYA* p, HINSTANCE h);
 HRESULT WINAPI AtlModuleRegisterClassObjects(_ATL_MODULEA* pM, DWORD dwClsContext, DWORD dwFlags);
+HRESULT WINAPI AtlModuleUnregisterServerEx(_ATL_MODULEA* pM, BOOL bUnRegTypeLib, const CLSID* pCLSID);
 HRESULT WINAPI AtlModuleTerm(_ATL_MODULEA* pM);
 HRESULT WINAPI AtlInternalQueryInterface(LPVOID pThis,
         const _ATL_INTMAP_ENTRY* pEntries, REFIID iid, LPVOID* ppvObject);