diff --git a/src/apprt/gtk/style-dark.css b/src/apprt/gtk/style-dark.css
index dcd4bcab9..1ea2aeb4b 100644
--- a/src/apprt/gtk/style-dark.css
+++ b/src/apprt/gtk/style-dark.css
@@ -2,7 +2,7 @@
   background-color: transparent;
 }
 
-.terminal-window .notebook separator {
+.terminal-window .notebook paned > separator {
   background-color: rgba(36, 36, 36, 1);
   background-clip: content-box;
 }
diff --git a/src/apprt/gtk/style.css b/src/apprt/gtk/style.css
index d1e848ac6..dbed8ef25 100644
--- a/src/apprt/gtk/style.css
+++ b/src/apprt/gtk/style.css
@@ -45,7 +45,7 @@ window.ssd.no-border-radius {
   background-color: transparent;
 }
 
-.terminal-window .notebook separator {
+.terminal-window .notebook paned > separator {
   background-color: rgba(250, 250, 250, 1);
   background-clip: content-box;
 }