diff --git a/admin/css/style.css b/admin/css/style.css
index 48614c3e..13b13894 100644
--- a/admin/css/style.css
+++ b/admin/css/style.css
@@ -1113,7 +1113,6 @@ a.operate-reply {
     max-width: 100%; }
   #wmd-preview code, #wmd-preview pre {
     padding: 2px 4px;
-    max-height: 400px;
     overflow: auto;
     background: #F6F6F3;
     font-size: .92857em; }
diff --git a/admin/scss/components/_editor.scss b/admin/scss/components/_editor.scss
index c8b541b0..f12a53f4 100644
--- a/admin/scss/components/_editor.scss
+++ b/admin/scss/components/_editor.scss
@@ -68,7 +68,6 @@
   img { max-width: 100%; }
   code, pre {
     padding: 2px 4px;
-    max-height: 400px;
     overflow: auto;
     background: #F6F6F3;
     font-size: .92857em;