diff --git a/cms/static/sass/elements/_modal-window.scss b/cms/static/sass/elements/_modal-window.scss
index 7efff97f7a..f070422709 100644
--- a/cms/static/sass/elements/_modal-window.scss
+++ b/cms/static/sass/elements/_modal-window.scss
@@ -173,7 +173,7 @@
   .modal-window {
 
     .CodeMirror {
-      height: 100%;
+      height: 390px;
     }
 
     .wrapper-comp-settings {