diff --git a/ext/objspace/objspace_dump.c b/ext/objspace/objspace_dump.c
index 11204d7ff3..5fa9d98e38 100644
--- a/ext/objspace/objspace_dump.c
+++ b/ext/objspace/objspace_dump.c
@@ -273,7 +273,7 @@ dump_object(VALUE obj, struct dump_config *dc)
 
       case T_HASH:
 	dump_append(dc, ", \"size\":%"PRIuSIZE, (size_t)RHASH_SIZE(obj));
-	if (FL_TEST(obj, RHASH_PROC_DEFAULT))
+        if (FL_TEST(obj, RHASH_PROC_DEFAULT))
             dump_append(dc, ", \"default\":\"%#"PRIxVALUE"\"", RHASH_IFNONE(obj));
 	break;
 
diff --git a/hash.c b/hash.c
index d0386d4fb0..dfb27b83b2 100644
--- a/hash.c
+++ b/hash.c
@@ -1505,7 +1505,7 @@ rb_hash_dup(VALUE hash)
 {
     const VALUE flags = RBASIC(hash)->flags;
     VALUE ret = hash_dup(hash, rb_obj_class(hash),
-			 flags & (FL_EXIVAR|FL_TAINT|RHASH_PROC_DEFAULT));
+                         flags & (FL_EXIVAR|FL_TAINT|RHASH_PROC_DEFAULT));
     if (flags & FL_EXIVAR)
         rb_copy_generic_ivar(ret, hash);
     return ret;
@@ -1885,7 +1885,7 @@ rb_hash_default_value(VALUE hash, VALUE key)
 {
     if (rb_method_basic_definition_p(CLASS_OF(hash), id_default)) {
 	VALUE ifnone = RHASH_IFNONE(hash);
-	if (!FL_TEST(hash, RHASH_PROC_DEFAULT)) return ifnone;
+        if (!FL_TEST(hash, RHASH_PROC_DEFAULT)) return ifnone;
 	if (key == Qundef) return Qnil;
 	return rb_funcall(ifnone, id_yield, 2, hash, key);
     }
@@ -3302,7 +3302,7 @@ rb_hash_to_h(VALUE hash)
     }
     if (rb_obj_class(hash) != rb_cHash) {
 	const VALUE flags = RBASIC(hash)->flags;
-	hash = hash_dup(hash, rb_cHash, flags & RHASH_PROC_DEFAULT);
+        hash = hash_dup(hash, rb_cHash, flags & RHASH_PROC_DEFAULT);
     }
     return hash;
 }
@@ -3546,7 +3546,7 @@ hash_equal(VALUE hash1, VALUE hash2, int eql)
 
 #if 0
     if (!(rb_equal(RHASH_IFNONE(hash1), RHASH_IFNONE(hash2)) &&
-	  FL_TEST(hash1, RHASH_PROC_DEFAULT) == FL_TEST(hash2, RHASH_PROC_DEFAULT)))
+          FL_TEST(hash1, RHASH_PROC_DEFAULT) == FL_TEST(hash2, RHASH_PROC_DEFAULT)))
 	return Qfalse;
 #endif
     return Qtrue;
diff --git a/marshal.c b/marshal.c
index db62d3bda2..61c7c13a22 100644
--- a/marshal.c
+++ b/marshal.c
@@ -917,7 +917,7 @@ w_object(VALUE obj, struct dump_arg *arg, int limit)
 	    if (NIL_P(RHASH_IFNONE(obj))) {
 		w_byte(TYPE_HASH, arg);
 	    }
-	    else if (FL_TEST(obj, RHASH_PROC_DEFAULT)) {
+            else if (FL_TEST(obj, RHASH_PROC_DEFAULT)) {
 		rb_raise(rb_eTypeError, "can't dump hash with default proc");
 	    }
 	    else {