diff --git a/Makefile b/Makefile
index 3d7eab1..e1f2209 100644
--- a/Makefile
+++ b/Makefile
@@ -70,4 +70,10 @@ qemu: kernel
 qemu-gdb: kernel
 	$(QEMU) $(QEMU_ARGS) -s -S
 
-.PHONY: kernel clippy fmt test kernel-test-dump kernel-asm build-target clean qemu qemu-gdb
+kernel-expand:
+	@env RUSTFLAGS="$(RUSTFLAGS)" cargo expand $(CARGO_TARGET_ARGS) --manifest-path kernel/Cargo.toml $(filter-out $@,$(MAKECMDGOALS))
+
+%:
+	@:
+
+.PHONY: kernel clippy fmt test kernel-test-dump kernel-asm build-target clean qemu qemu-gdb kernel-expand