1 files changed, 1 insertions, 1 deletions
diff --git a/sprintf.c b/sprintf.c
index 6551f8f043..52a7168dc9 100644
--- a/sprintf.c
+++ b/sprintf.c
@@ -567,7 +567,7 @@ rb_str_format(int argc, const VALUE *argv, VALUE fmt)
 		    rb_enc_raise(enc, rb_eArgError, "named%.*s after <%s>",
 				 len, start, rb_id2name(id));
 		}
-		nextvalue = GETNAMEARG((id = rb_check_id_cstr(start + 1,
+		nextvalue = GETNAMEARG((id = rb_check_id_cstr_without_pindown(start + 1,
 							      len - 2 /* without parenthesis */,
 							      enc),
 					ID2SYM(id)),