diff --git a/addons/im_livechat/static/src/legacy/public_livechat.scss b/addons/im_livechat/static/src/legacy/public_livechat.scss
index 2176ff9d830..d936804f5e1 100644
--- a/addons/im_livechat/static/src/legacy/public_livechat.scss
+++ b/addons/im_livechat/static/src/legacy/public_livechat.scss
@@ -11,7 +11,7 @@ $o-mail-thread-window-zindex: $zindex-modal + 1 !default;
     position: fixed;
     width: $o-mail-thread-window-width;
     max-width: 100%;
-    height: 400px;
+    height: 460px;
     max-height: 100%;
     font-size: 12px;
     background-color: $o-mail-thread-window-bg;