diff --git a/common/gtk-3.0/3.14/gtk-dark.css b/common/gtk-3.0/3.14/gtk-dark.css
index 3ac3ad0..d66c8cd 100644
--- a/common/gtk-3.0/3.14/gtk-dark.css
+++ b/common/gtk-3.0/3.14/gtk-dark.css
@@ -2337,7 +2337,7 @@ GtkVolumeButton.button {
   background-color: transparent;
   background-image: none;
   background-color: rgba(47, 52, 63, 0);
-  border-width: rgba(47, 52, 63, 0);
+  border-color: rgba(47, 52, 63, 0);
   color: transparent;
   background-position: center;
   background-repeat: no-repeat; }
diff --git a/common/gtk-3.0/3.14/gtk-darker.css b/common/gtk-3.0/3.14/gtk-darker.css
index 569bef9..bd6c52e 100644
--- a/common/gtk-3.0/3.14/gtk-darker.css
+++ b/common/gtk-3.0/3.14/gtk-darker.css
@@ -2340,7 +2340,7 @@ GtkVolumeButton.button {
   background-color: transparent;
   background-image: none;
   background-color: rgba(47, 52, 63, 0);
-  border-width: rgba(47, 52, 63, 0);
+  border-color: rgba(47, 52, 63, 0);
   color: transparent;
   background-position: center;
   background-repeat: no-repeat; }
diff --git a/common/gtk-3.0/3.14/gtk-solid-dark.css b/common/gtk-3.0/3.14/gtk-solid-dark.css
index 7311f15..005fa7e 100644
--- a/common/gtk-3.0/3.14/gtk-solid-dark.css
+++ b/common/gtk-3.0/3.14/gtk-solid-dark.css
@@ -2337,7 +2337,7 @@ GtkVolumeButton.button {
   background-color: transparent;
   background-image: none;
   background-color: rgba(47, 52, 63, 0);
-  border-width: rgba(47, 52, 63, 0);
+  border-color: rgba(47, 52, 63, 0);
   color: transparent;
   background-position: center;
   background-repeat: no-repeat; }
diff --git a/common/gtk-3.0/3.14/gtk-solid-darker.css b/common/gtk-3.0/3.14/gtk-solid-darker.css
index 0674eee..f25dd32 100644
--- a/common/gtk-3.0/3.14/gtk-solid-darker.css
+++ b/common/gtk-3.0/3.14/gtk-solid-darker.css
@@ -2340,7 +2340,7 @@ GtkVolumeButton.button {
   background-color: transparent;
   background-image: none;
   background-color: rgba(47, 52, 63, 0);
-  border-width: rgba(47, 52, 63, 0);
+  border-color: rgba(47, 52, 63, 0);
   color: transparent;
   background-position: center;
   background-repeat: no-repeat; }
diff --git a/common/gtk-3.0/3.14/gtk-solid.css b/common/gtk-3.0/3.14/gtk-solid.css
index 6ecb869..fb5dd35 100644
--- a/common/gtk-3.0/3.14/gtk-solid.css
+++ b/common/gtk-3.0/3.14/gtk-solid.css
@@ -2340,7 +2340,7 @@ GtkVolumeButton.button {
   background-color: transparent;
   background-image: none;
   background-color: rgba(231, 232, 235, 0);
-  border-width: rgba(231, 232, 235, 0);
+  border-color: rgba(231, 232, 235, 0);
   color: transparent;
   background-position: center;
   background-repeat: no-repeat; }
diff --git a/common/gtk-3.0/3.14/gtk.css b/common/gtk-3.0/3.14/gtk.css
index ee8dc74..d0f2631 100644
--- a/common/gtk-3.0/3.14/gtk.css
+++ b/common/gtk-3.0/3.14/gtk.css
@@ -2340,7 +2340,7 @@ GtkVolumeButton.button {
   background-color: transparent;
   background-image: none;
   background-color: rgba(231, 232, 235, 0);
-  border-width: rgba(231, 232, 235, 0);
+  border-color: rgba(231, 232, 235, 0);
   color: transparent;
   background-position: center;
   background-repeat: no-repeat; }
diff --git a/common/gtk-3.0/3.14/sass/_common.scss b/common/gtk-3.0/3.14/sass/_common.scss
index bcff9b9..e8e7e2b 100644
--- a/common/gtk-3.0/3.14/sass/_common.scss
+++ b/common/gtk-3.0/3.14/sass/_common.scss
@@ -2697,7 +2697,7 @@ GtkVolumeButton.button { padding: 8px; }
 
     @include button(undecorated);
     background-color: transparentize($header_bg, 1);
-    border-width: transparentize($header_bg, 1);
+    border-color: transparentize($header_bg, 1);
 
     color: transparent;
     background-position: center;