diff --git a/src/Make_morph.mak b/src/Make_morph.mak
index bb5805c..2c226de 100644
--- a/src/Make_morph.mak
+++ b/src/Make_morph.mak
@@ -102,6 +102,7 @@
 	term.c							\
 	testing.c						\
 	textprop.c						\
+	time.c							\
 	ui.c							\
 	undo.c							\
 	usercmd.c						\