diff --git a/common/gtk-3.0/3.18/gtk-contained-dark.css b/common/gtk-3.0/3.18/gtk-contained-dark.css
index e5fa09b..e4692d7 100644
--- a/common/gtk-3.0/3.18/gtk-contained-dark.css
+++ b/common/gtk-3.0/3.18/gtk-contained-dark.css
@@ -1664,7 +1664,7 @@ column-header .button, column-header .button:hover, column-header .button:active
  **************/
 .scrollbar {
   -GtkRange-slider-width: 13;
-  -GtkRange-trough-border: 1;
+  -GtkRange-trough-border: 0;
   -GtkScrollbar-has-backward-stepper: false;
   -GtkScrollbar-has-forward-stepper: false;
   -GtkScrollbar-min-slider-length: 42;
diff --git a/common/gtk-3.0/3.18/gtk-contained-darker.css b/common/gtk-3.0/3.18/gtk-contained-darker.css
index c57d00b..95e8a5b 100644
--- a/common/gtk-3.0/3.18/gtk-contained-darker.css
+++ b/common/gtk-3.0/3.18/gtk-contained-darker.css
@@ -1664,7 +1664,7 @@ column-header .button, column-header .button:hover, column-header .button:active
  **************/
 .scrollbar {
   -GtkRange-slider-width: 13;
-  -GtkRange-trough-border: 1;
+  -GtkRange-trough-border: 0;
   -GtkScrollbar-has-backward-stepper: false;
   -GtkScrollbar-has-forward-stepper: false;
   -GtkScrollbar-min-slider-length: 42;
diff --git a/common/gtk-3.0/3.18/gtk-contained-solid-dark.css b/common/gtk-3.0/3.18/gtk-contained-solid-dark.css
index 5c651a0..ecbff68 100644
--- a/common/gtk-3.0/3.18/gtk-contained-solid-dark.css
+++ b/common/gtk-3.0/3.18/gtk-contained-solid-dark.css
@@ -1664,7 +1664,7 @@ column-header .button, column-header .button:hover, column-header .button:active
  **************/
 .scrollbar {
   -GtkRange-slider-width: 13;
-  -GtkRange-trough-border: 1;
+  -GtkRange-trough-border: 0;
   -GtkScrollbar-has-backward-stepper: false;
   -GtkScrollbar-has-forward-stepper: false;
   -GtkScrollbar-min-slider-length: 42;
diff --git a/common/gtk-3.0/3.18/gtk-contained-solid-darker.css b/common/gtk-3.0/3.18/gtk-contained-solid-darker.css
index 4eacc75..9575eff 100644
--- a/common/gtk-3.0/3.18/gtk-contained-solid-darker.css
+++ b/common/gtk-3.0/3.18/gtk-contained-solid-darker.css
@@ -1664,7 +1664,7 @@ column-header .button, column-header .button:hover, column-header .button:active
  **************/
 .scrollbar {
   -GtkRange-slider-width: 13;
-  -GtkRange-trough-border: 1;
+  -GtkRange-trough-border: 0;
   -GtkScrollbar-has-backward-stepper: false;
   -GtkScrollbar-has-forward-stepper: false;
   -GtkScrollbar-min-slider-length: 42;
diff --git a/common/gtk-3.0/3.18/gtk-contained-solid.css b/common/gtk-3.0/3.18/gtk-contained-solid.css
index ee50e07..fa19cdd 100644
--- a/common/gtk-3.0/3.18/gtk-contained-solid.css
+++ b/common/gtk-3.0/3.18/gtk-contained-solid.css
@@ -1664,7 +1664,7 @@ column-header .button, column-header .button:hover, column-header .button:active
  **************/
 .scrollbar {
   -GtkRange-slider-width: 13;
-  -GtkRange-trough-border: 1;
+  -GtkRange-trough-border: 0;
   -GtkScrollbar-has-backward-stepper: false;
   -GtkScrollbar-has-forward-stepper: false;
   -GtkScrollbar-min-slider-length: 42;
diff --git a/common/gtk-3.0/3.18/gtk-contained.css b/common/gtk-3.0/3.18/gtk-contained.css
index a2e73ea..37eb8c8 100644
--- a/common/gtk-3.0/3.18/gtk-contained.css
+++ b/common/gtk-3.0/3.18/gtk-contained.css
@@ -1664,7 +1664,7 @@ column-header .button, column-header .button:hover, column-header .button:active
  **************/
 .scrollbar {
   -GtkRange-slider-width: 13;
-  -GtkRange-trough-border: 1;
+  -GtkRange-trough-border: 0;
   -GtkScrollbar-has-backward-stepper: false;
   -GtkScrollbar-has-forward-stepper: false;
   -GtkScrollbar-min-slider-length: 42;
diff --git a/common/gtk-3.0/3.18/sass/_common.scss b/common/gtk-3.0/3.18/sass/_common.scss
index dab3844..791ea1c 100644
--- a/common/gtk-3.0/3.18/sass/_common.scss
+++ b/common/gtk-3.0/3.18/sass/_common.scss
@@ -1851,7 +1851,7 @@ $_scrollbar_bg_color: darken($base_color, 1%);
 
 .scrollbar {
   -GtkRange-slider-width: 13;
-  -GtkRange-trough-border: 1;
+  -GtkRange-trough-border: 0;
   -GtkScrollbar-has-backward-stepper: false;
   -GtkScrollbar-has-forward-stepper: false;
   -GtkScrollbar-min-slider-length: 42; // minimum size for the slider.