diff --git a/packages/rocketchat-theme/assets/stylesheets/base.less b/packages/rocketchat-theme/assets/stylesheets/base.less
index 9661f6c9377..7675dc83045 100644
--- a/packages/rocketchat-theme/assets/stylesheets/base.less
+++ b/packages/rocketchat-theme/assets/stylesheets/base.less
@@ -2209,7 +2209,7 @@ label.required:after {
 				&.show-send .send-button {
 					display: inline-block;
 				}
-				width: 44px;
+				flex: 0 0 35px;
 				text-align: center;
 				border: 0;
 				cursor: pointer;
@@ -2227,7 +2227,6 @@ label.required:after {
 					right: 0;
 					bottom: 0;
 					overflow: hidden;
-					width: 44px;
 					opacity: 0;
 					cursor: pointer;
 				}