diff --git a/dlls/combase/combase.spec b/dlls/combase/combase.spec
index c8a8dee43f3..cffb33f0a3a 100644
--- a/dlls/combase/combase.spec
+++ b/dlls/combase/combase.spec
@@ -170,7 +170,7 @@
 @ stdcall CreateStreamOnHGlobal(ptr long ptr) ole32.CreateStreamOnHGlobal
 @ stub DcomChannelSetHResult
 @ stdcall DllDebugObjectRPCHook(long ptr) ole32.DllDebugObjectRPCHook
-@ stub DllGetActivationFactory
+@ stdcall DllGetActivationFactory(ptr ptr)
 @ stdcall -private DllGetClassObject(ptr ptr ptr) ole32.DllGetClassObject
 @ stub EnableHookObject
 @ stdcall FreePropVariantArray(long ptr) ole32.FreePropVariantArray
diff --git a/dlls/combase/roapi.c b/dlls/combase/roapi.c
index 63e218d9103..c9fe80f4563 100644
--- a/dlls/combase/roapi.c
+++ b/dlls/combase/roapi.c
@@ -282,3 +282,13 @@ void WINAPI CleanupTlsOleState(void *unknown)
 {
     FIXME("(%p): stub\n", unknown);
 }
+
+/***********************************************************************
+ *      DllGetActivationFactory (combase.@)
+ */
+HRESULT WINAPI DllGetActivationFactory(HSTRING classid, IActivationFactory **factory)
+{
+    FIXME("(%s, %p): stub\n", debugstr_hstring(classid), factory);
+
+    return REGDB_E_CLASSNOTREG;
+}