diff --git a/.gitignore b/.gitignore
index 58e9e7e..b56a9aa 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,3 +8,6 @@ semu
 Image
 ext4.img
 rootfs.cpio
+
+# intermediate
+riscv-harts.dtsi
diff --git a/Makefile b/Makefile
index 3b81bf2..caaab7d 100644
--- a/Makefile
+++ b/Makefile
@@ -98,6 +98,7 @@ clean:
 	$(Q)$(RM) $(BIN) $(OBJS) $(deps)
 
 distclean: clean
+	$(Q)$(RM) riscv-harts.dtsi
 	$(Q)$(RM) minimal.dtb
 	$(Q)$(RM) Image rootfs.cpio
 	$(Q)$(RM) ext4.img