diff --git a/Makefile.clang b/Makefile.clang
index d1f5017..e09b2bd 100644
--- a/Makefile.clang
+++ b/Makefile.clang
@@ -46,7 +46,7 @@ build/stdlib.o: include/ckb-c-stdlib/libc/src/impl.c
 	@$(CC) $(filter-out -DCKB_DECLARATION_ONLY, $(CFLAGS)) -c -o $@ $<
 
 lualib/liblua.a:
-	make -C lualib -f Makefile.clang liblua.a
+	make -C lualib -f Makefile.clang CC=$(CC) liblua.a
 
 build/spawnexample.o: examples/spawn.c
 	$(CC) -c $(CFLAGS) -o $@ $<
diff --git a/lualib/Makefile.clang b/lualib/Makefile.clang
index d56a712..366e419 100644
--- a/lualib/Makefile.clang
+++ b/lualib/Makefile.clang
@@ -6,7 +6,7 @@
 # Your platform. See PLATS for possible values.
 PLAT= guess
 
-CC= clang-16
+CC ?= clang-16
 # -ULUA_USE_LINUX -ULUA_USE_POSIX to make lua dependencies minimal,
 # otherwise, we may unable to find various platform dependent symbols, e.g.
 # setsignal.