diff --git a/Makefile.in b/Makefile.in
index a013e21..c2d00df 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -35,7 +35,7 @@ install-headers:
 	chmod 644 $(DESTDIR)/$(HEADERS)/ck_*.h || exit
 	mkdir -p $(DESTDIR)$(HEADERS)/gcc || exit
 	cp -r $(SRC_DIR)/include/gcc/* $(DESTDIR)/$(HEADERS)/gcc || exit
-	cp include/ck_md.h $(DESTDIR)/ck_md.h || exit
+	cp include/ck_md.h $(DESTDIR)/$(HEADERS)/ck_md.h || exit
 	chmod 755 $(DESTDIR)/$(HEADERS)/gcc
 	chmod 644 $(DESTDIR)/$(HEADERS)/gcc/ck_*.h $(DESTDIR)/$(HEADERS)/gcc/*/ck_*.h || exit