diff --git a/stylesheets/_index.scss b/stylesheets/_index.scss
index 7b474a3c8cb..1318ca4c6ec 100644
--- a/stylesheets/_index.scss
+++ b/stylesheets/_index.scss
@@ -76,7 +76,7 @@
 .inactive .conversation-header {
   background-color: $grey_l !important;
   color: $grey_d;
-  border-color: 1px solid rgba(0,0,0,0.05);
+  border-color: rgba(0,0,0,0.05);
 }
 
 input.search {
diff --git a/stylesheets/manifest.css b/stylesheets/manifest.css
index 80a7464d1d1..2c1d3d75135 100644
--- a/stylesheets/manifest.css
+++ b/stylesheets/manifest.css
@@ -488,7 +488,7 @@ input[type=text]:active, input[type=text]:focus, input[type=search]:active, inpu
 .inactive .conversation-header {
   background-color: #f3f3f3 !important;
   color: #454545;
-  border-color: 1px solid rgba(0, 0, 0, 0.05); }
+  border-color: rgba(0, 0, 0, 0.05); }
 
 input.search {
   border: none;