1 files changed, 1 insertions, 0 deletions
diff --git a/io.c b/io.c
index 053c161e53..00f4ea62fa 100644
--- a/io.c
+++ b/io.c
@@ -1715,6 +1715,7 @@ fill_cbuf(rb_io_t *fptr, int ec_flags)
                     res = rb_econv_convert(fptr->readconv, NULL, NULL, &dp, de, 0);
                     fptr->cbuf.len += (int)(dp - ds);
                     rb_econv_check_error(fptr->readconv);
+                    break;
                 }
             }
         }