diff --git a/dll/apisets/api-ms-win-appmodel-runtime-l1-1-2.spec b/dll/apisets/api-ms-win-appmodel-runtime-l1-1-2.spec
index b5699a9add..ead1400bb9 100644
--- a/dll/apisets/api-ms-win-appmodel-runtime-l1-1-2.spec
+++ b/dll/apisets/api-ms-win-appmodel-runtime-l1-1-2.spec
@@ -7,7 +7,7 @@
 @ stub AppPolicyGetMediaFoundationCodecLoading
 @ stub AppPolicyGetProcessTerminationMethod
 @ stub AppPolicyGetShowDeveloperDiagnostic
-@ stub AppPolicyGetThreadInitializationType
+@ stdcall -stub AppPolicyGetThreadInitializationType(long ptr)
 @ stub AppPolicyGetWindowingModel
 @ stub GetApplicationUserModelIdFromToken
 @ stub GetPackageFamilyNameFromToken