diff --git a/dlls/mfplat/mfplat.spec b/dlls/mfplat/mfplat.spec
index 42b0b86f454..f6064476d72 100644
--- a/dlls/mfplat/mfplat.spec
+++ b/dlls/mfplat/mfplat.spec
@@ -138,7 +138,7 @@
 @ stdcall MFTEnumEx(int128 long ptr ptr ptr ptr)
 @ stub MFTGetInfo
 @ stdcall MFTRegister(int128 int128 wstr long long ptr long ptr ptr)
-@ stub MFTRegisterLocal(ptr ptr wstr long long  ptr long ptr)
+@ stdcall MFTRegisterLocal(ptr ptr wstr long long  ptr long ptr)
 @ stub MFTRegisterLocalByCLSID
 @ stdcall MFTUnregister(int128)
 @ stdcall MFTUnregisterLocal(ptr)