diff --git a/addons/mail/static/src/components/discuss_container/discuss_container.scss b/addons/mail/static/src/components/discuss_container/discuss_container.scss
new file mode 100644
index 00000000000..5f2373d0b2b
--- /dev/null
+++ b/addons/mail/static/src/components/discuss_container/discuss_container.scss
@@ -0,0 +1,3 @@
+.o_DiscussContainer {
+    min-height: 0;
+}