diff --git a/packages/windows/sdk/NTMakefile b/packages/windows/sdk/NTMakefile
index 401fc5755..3c850eeca 100644
--- a/packages/windows/sdk/NTMakefile
+++ b/packages/windows/sdk/NTMakefile
@@ -147,5 +147,6 @@ clean::
 	-$(RM) $(SDKINCDIR)\krb5\*.*
 	-$(RM) $(SDKINCDIR)\heimdal\*.*
 	-$(RM) $(SDKINCDIR)\kadm5\*.*
+	-$(RM) $(SDKINCDIR)\gssapi\*.*
 	-$(RM) $(SDKLIBDIR)\*.*
 	-$(RM) $(SDKREDISTDIR)\*.*