diff --git a/common/gtk-3.0/3.20/gtk-dark.css b/common/gtk-3.0/3.20/gtk-dark.css
index 4ace161..e317ef3 100644
--- a/common/gtk-3.0/3.20/gtk-dark.css
+++ b/common/gtk-3.0/3.20/gtk-dark.css
@@ -1540,11 +1540,11 @@ menu,
   .menu separator {
     margin: 2px 0;
     background-color: #383C4A; }
-  menu .separator,
-  .csd menu .separator,
-  .menu .separator,
+  menu .separator:not(label),
+  .csd menu .separator:not(label),
+  .menu .separator:not(label),
   .csd
-  .menu .separator {
+  .menu .separator:not(label) {
     color: #383C4A; }
   menu menuitem,
   .menu menuitem {
diff --git a/common/gtk-3.0/3.20/gtk-darker.css b/common/gtk-3.0/3.20/gtk-darker.css
index 91cbad4..f689efd 100644
--- a/common/gtk-3.0/3.20/gtk-darker.css
+++ b/common/gtk-3.0/3.20/gtk-darker.css
@@ -1539,11 +1539,11 @@ menu,
   .menu separator {
     margin: 2px 0;
     background-color: #ffffff; }
-  menu .separator,
-  .csd menu .separator,
-  .menu .separator,
+  menu .separator:not(label),
+  .csd menu .separator:not(label),
+  .menu .separator:not(label),
   .csd
-  .menu .separator {
+  .menu .separator:not(label) {
     color: #ffffff; }
   menu menuitem,
   .menu menuitem {
diff --git a/common/gtk-3.0/3.20/gtk-solid-dark.css b/common/gtk-3.0/3.20/gtk-solid-dark.css
index 3a9c6a6..9a1f701 100644
--- a/common/gtk-3.0/3.20/gtk-solid-dark.css
+++ b/common/gtk-3.0/3.20/gtk-solid-dark.css
@@ -1540,11 +1540,11 @@ menu,
   .menu separator {
     margin: 2px 0;
     background-color: #383C4A; }
-  menu .separator,
-  .csd menu .separator,
-  .menu .separator,
+  menu .separator:not(label),
+  .csd menu .separator:not(label),
+  .menu .separator:not(label),
   .csd
-  .menu .separator {
+  .menu .separator:not(label) {
     color: #383C4A; }
   menu menuitem,
   .menu menuitem {
diff --git a/common/gtk-3.0/3.20/gtk-solid-darker.css b/common/gtk-3.0/3.20/gtk-solid-darker.css
index 8e1daaa..b4de82b 100644
--- a/common/gtk-3.0/3.20/gtk-solid-darker.css
+++ b/common/gtk-3.0/3.20/gtk-solid-darker.css
@@ -1539,11 +1539,11 @@ menu,
   .menu separator {
     margin: 2px 0;
     background-color: #ffffff; }
-  menu .separator,
-  .csd menu .separator,
-  .menu .separator,
+  menu .separator:not(label),
+  .csd menu .separator:not(label),
+  .menu .separator:not(label),
   .csd
-  .menu .separator {
+  .menu .separator:not(label) {
     color: #ffffff; }
   menu menuitem,
   .menu menuitem {
diff --git a/common/gtk-3.0/3.20/gtk-solid.css b/common/gtk-3.0/3.20/gtk-solid.css
index acd24c3..62c6e3a 100644
--- a/common/gtk-3.0/3.20/gtk-solid.css
+++ b/common/gtk-3.0/3.20/gtk-solid.css
@@ -1543,11 +1543,11 @@ menu,
   .menu separator {
     margin: 2px 0;
     background-color: #ffffff; }
-  menu .separator,
-  .csd menu .separator,
-  .menu .separator,
+  menu .separator:not(label),
+  .csd menu .separator:not(label),
+  .menu .separator:not(label),
   .csd
-  .menu .separator {
+  .menu .separator:not(label) {
     color: #ffffff; }
   menu menuitem,
   .menu menuitem {
diff --git a/common/gtk-3.0/3.20/gtk.css b/common/gtk-3.0/3.20/gtk.css
index b0a2580..a25de10 100644
--- a/common/gtk-3.0/3.20/gtk.css
+++ b/common/gtk-3.0/3.20/gtk.css
@@ -1543,11 +1543,11 @@ menu,
   .menu separator {
     margin: 2px 0;
     background-color: #ffffff; }
-  menu .separator,
-  .csd menu .separator,
-  .menu .separator,
+  menu .separator:not(label),
+  .csd menu .separator:not(label),
+  .menu .separator:not(label),
   .csd
-  .menu .separator {
+  .menu .separator:not(label) {
     color: #ffffff; }
   menu menuitem,
   .menu menuitem {
diff --git a/common/gtk-3.0/3.20/sass/_common.scss b/common/gtk-3.0/3.20/sass/_common.scss
index 68ad9aa..8cf477d 100644
--- a/common/gtk-3.0/3.20/sass/_common.scss
+++ b/common/gtk-3.0/3.20/sass/_common.scss
@@ -1616,8 +1616,9 @@ menu,
   }
 
   // Firefox workaround
-  .separator,
-  .csd & .separator { color: $_menu_bg; }
+  .separator:not(label),
+  .csd & .separator:not(label) { color: $_menu_bg; }
+  // Firefox workaround end
 
   menuitem {
     min-height: 16px;