diff --git a/Breeze-dark-gtk/gtk-3.18/gtk.css b/Breeze-dark-gtk/gtk-3.18/gtk.css
--- a/Breeze-dark-gtk/gtk-3.18/gtk.css
+++ b/Breeze-dark-gtk/gtk-3.18/gtk.css
@@ -2714,7 +2714,7 @@
         color: rgba(216, 218, 221, 0.35); }
     GtkTreeView.view:insensitive:backdrop {
       color: rgba(88, 92, 95, 0.35); }
-  GtkTreeView.view.seperator {
+  GtkTreeView.view.separator {
     color: #616569; }
   GtkTreeView.view.separator:backdrop {
     color: #616569; }
diff --git a/Breeze-dark-gtk/gtk-3.20/gtk.css b/Breeze-dark-gtk/gtk-3.20/gtk.css
--- a/Breeze-dark-gtk/gtk-3.20/gtk.css
+++ b/Breeze-dark-gtk/gtk-3.20/gtk.css
@@ -3535,7 +3535,7 @@
         color: rgba(216, 218, 221, 0.35); }
     treeview.view:disabled:backdrop {
       color: rgba(88, 92, 95, 0.35); }
-  treeview.view.seperator {
+  treeview.view.separator {
     min-height: 2px;
     color: #616569; }
   treeview.view.separator:backdrop {
diff --git a/Breeze-gtk/gtk-3.18/gtk.css b/Breeze-gtk/gtk-3.18/gtk.css
--- a/Breeze-gtk/gtk-3.18/gtk.css
+++ b/Breeze-gtk/gtk-3.18/gtk.css
@@ -2714,7 +2714,7 @@
         color: rgba(216, 218, 221, 0.35); }
     GtkTreeView.view:insensitive:backdrop {
       color: rgba(174, 176, 179, 0.35); }
-  GtkTreeView.view.seperator {
+  GtkTreeView.view.separator {
     color: #c0c2c4; }
   GtkTreeView.view.separator:backdrop {
     color: #c0c2c4; }
diff --git a/Breeze-gtk/gtk-3.20/gtk.css b/Breeze-gtk/gtk-3.20/gtk.css
--- a/Breeze-gtk/gtk-3.20/gtk.css
+++ b/Breeze-gtk/gtk-3.20/gtk.css
@@ -3579,7 +3579,7 @@
         color: @insensitive_bg_color; }
     treeview.view:disabled:backdrop {
       color: @insensitive_borders; }
-  treeview.view.seperator {
+  treeview.view.separator {
     min-height: 2px;
     color: @borders; }
   treeview.view.separator:backdrop {