diff --git a/lib/gssapi/NTMakefile b/lib/gssapi/NTMakefile
index 6de72d5f6..4104429c9 100644
--- a/lib/gssapi/NTMakefile
+++ b/lib/gssapi/NTMakefile
@@ -124,6 +124,7 @@ mechsrc = \
 	mech/gss_inquire_names_for_mech.c \
 	mech/gss_krb5.c \
 	mech/gss_mech_switch.c \
+	mech/gss_mo.c \
 	mech/gss_names.c \
 	mech/gss_oid.c \
 	mech/gss_oid_equal.c \
@@ -335,6 +336,7 @@ libgssapi_OBJs = \
 	$(OBJ)\mech/gss_inquire_names_for_mech.obj \
 	$(OBJ)\mech/gss_krb5.obj \
 	$(OBJ)\mech/gss_mech_switch.obj \
+	$(OBJ)\mech/gss_mo.obj \
 	$(OBJ)\mech/gss_names.obj \
 	$(OBJ)\mech/gss_oid.obj \
 	$(OBJ)\mech/gss_oid_equal.obj \