diff --git a/Makefile.in b/Makefile.in
index 77da86a4..80962421 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -53,7 +53,7 @@ docs/ct-ng.1.gz: docs/ct-ng.1
 	@echo "  GZIP   $@"
 	@gzip -c9 $< >$@
 
-%: %.in
+%: %.in Makefile
 	@echo "  SED    $@"
 	@sed -r -e 's,@@CT_MAKE@@,$(MAKE),g;'       \
 	        -e 's,@@CT_BINDIR@@,$(BINDIR),g;'   \