diff --git a/app/assets/stylesheets/framework/timeline.scss b/app/assets/stylesheets/framework/timeline.scss
index eb53c4153d3e794e48443da57f213ae6315538cd..ff41e26ed8adc4185f783f34a567820392d27e44 100644
--- a/app/assets/stylesheets/framework/timeline.scss
+++ b/app/assets/stylesheets/framework/timeline.scss
@@ -10,8 +10,7 @@
     margin-left: -$gl-padding;
     margin-right: -$gl-padding;
     color: $gl-gray;
-    border-bottom: 1px solid #ECEEF1;
-    border-right: 1px solid #ECEEF1;
+    border-bottom: 1px solid $border-white-light;
 
     &:target {
       background: $hover;
diff --git a/app/assets/stylesheets/pages/issuable.scss b/app/assets/stylesheets/pages/issuable.scss
index 797a0af3720a66f78d2b55040d71e43c3cebd768..d6f51e6adc878043407c151dc6698973b6b71ec9 100644
--- a/app/assets/stylesheets/pages/issuable.scss
+++ b/app/assets/stylesheets/pages/issuable.scss
@@ -51,7 +51,7 @@
   }
 
   section {
-    border-right: 1px solid #ECEEF1;
+    border-right: 1px solid $border-white-light;
 
     > .tab-content {
       margin-right: 1px;
diff --git a/app/assets/stylesheets/pages/issues.scss b/app/assets/stylesheets/pages/issues.scss
index a652b65502ffaafaa9759b705f6135b53052c76d..12b190ef92519c6a8196409d4ac1f846a5309cb5 100644
--- a/app/assets/stylesheets/pages/issues.scss
+++ b/app/assets/stylesheets/pages/issues.scss
@@ -149,3 +149,10 @@ form.edit-issue {
 .issue-form .select2-container {
   width: 250px !important;
 }
+
+
+.issue-discussion {
+  .common-note-form {
+    border-right: 1px solid $border-white-light;
+  }
+}
diff --git a/app/assets/stylesheets/pages/note_form.scss b/app/assets/stylesheets/pages/note_form.scss
index e1a72af00130ea5234072ea58e118c13e1b0800a..4cf1a28c459f33a277d855500e51a8837cad64cf 100644
--- a/app/assets/stylesheets/pages/note_form.scss
+++ b/app/assets/stylesheets/pages/note_form.scss
@@ -79,7 +79,6 @@
   padding: $gl-padding;
   margin-left: -$gl-padding;
   margin-right: -$gl-padding;
-  border-right: 1px solid $border-color;
   border-top: 1px solid $border-color;
   margin-bottom: -$gl-padding;
 }