diff --git a/compile.c b/compile.c
index 8a098c71b3..62cfbbff3e 100644
--- a/compile.c
+++ b/compile.c
@@ -1710,7 +1710,7 @@ iseq_set_arguments(rb_iseq_t *iseq, LINK_ANCHOR *const optargs, const NODE *cons
 	body->param.size = arg_size;
 
 	if (args->pre_init) { /* m_init */
-	    NO_CHECK(COMPILE_POPPED(optargs, "init arguments (m)", args->pre_init));
+            NO_CHECK(COMPILE_POPPED(optargs, "init arguments (m)", args->pre_init));
 	}
 	if (args->post_init) { /* p_init */
             NO_CHECK(COMPILE_POPPED(optargs, "init arguments (p)", args->post_init));
@@ -4931,7 +4931,7 @@ compile_named_capture_assign(rb_iseq_t *iseq, LINK_ANCHOR *const ret, const NODE
     ADD_INSN(ret, line, pop);
     for (vars = node; vars; vars = vars->nd_next) {
 	last = ret->last;
-	NO_CHECK(COMPILE_POPPED(ret, "capture", vars->nd_head));
+        NO_CHECK(COMPILE_POPPED(ret, "capture", vars->nd_head));
 	last = last->next; /* putobject :var */
 	((INSN*)last)->insn_id = BIN(putnil);
 	((INSN*)last)->operand_size = 0;
@@ -8636,7 +8636,7 @@ iseq_build_from_ary_body(rb_iseq_t *iseq, LINK_ANCHOR *const anchor,
 			break;
 		      case TS_ISE:
 			FL_SET(iseq, ISEQ_MARKABLE_ISEQ);
-			/* fall through */
+                        /* fall through */
 		      case TS_IC:
 			argv[j] = op;
 			if (NUM2UINT(op) >= iseq->body->is_size) {