diff --git a/lib/krb5/NTMakefile b/lib/krb5/NTMakefile
index de70b0f64..07041aa88 100644
--- a/lib/krb5/NTMakefile
+++ b/lib/krb5/NTMakefile
@@ -217,6 +217,7 @@ dist_libkrb5_la_SOURCES =			\
 	error_string.c				\
 	expand_hostname.c			\
 	expand_path.c				\
+	fast.c					\
 	fcache.c				\
 	free.c					\
 	free_host_realm.c			\