diff --git a/csto.c b/csto.c
index 11f453c..8027f37 100644
--- a/csto.c
+++ b/csto.c
@@ -399,6 +399,8 @@ static int handle_luainit (lua_State *L) {
 
 #else			  /* }{ */
 
+/* clang-format off */
+
 #define lua_initreadline(L)	((void)L)
 #define lua_readline(L,b,p) \
 				((void)L, fputs(p, stdout), fflush(stdout),  /* show prompt */ \
@@ -406,6 +408,8 @@ static int handle_luainit (lua_State *L) {
 #define lua_saveline(L,line)	{ (void)L; (void)line; }
 #define lua_freeline(L,b)	{ (void)L; (void)b; }
 
+/* clang-format on */
+
 #endif			  /* } */
 
 #endif			  /* } */