diff --git a/src/apprt/gtk/class/surface.zig b/src/apprt/gtk/class/surface.zig
index 9253e3981..dc6637655 100644
--- a/src/apprt/gtk/class/surface.zig
+++ b/src/apprt/gtk/class/surface.zig
@@ -623,9 +623,9 @@ pub const Surface = extern struct {
     /// should be applied to the surface
     fn closureShouldUnfocusedSplitBeShown(
         _: *Self,
-        unfocused_split_: c_int,
+        unfocused_split: c_int,
     ) callconv(.c) c_int {
-        return @intFromBool(unfocused_split_ != 0);
+        return @intFromBool(unfocused_split != 0);
     }
 
     pub fn toggleFullscreen(self: *Self) void {
@@ -2025,7 +2025,7 @@ pub const Surface = extern struct {
         _ = glib.idleAddOnce(idleFocus, self.ref());
         self.as(gobject.Object).notifyByPspec(properties.focused.impl.param_spec);
 
-        // remove unfocused split fill and opacity
+        // remove unfocused-split-fill and unfocused-split-opacity
         priv.unfocused_split = false;
         self.as(gobject.Object).notifyByPspec(properties.@"unfocused-split".impl.param_spec);
 
diff --git a/src/apprt/gtk/ui/1.2/surface.blp b/src/apprt/gtk/ui/1.2/surface.blp
index ba17393b5..ba1556a61 100644
--- a/src/apprt/gtk/ui/1.2/surface.blp
+++ b/src/apprt/gtk/ui/1.2/surface.blp
@@ -116,7 +116,7 @@ Overlay terminal_page {
   }
 
   [overlay]
-  // Apply unfocused-split-fill and unfocused-split opacity to current surface
+  // Apply unfocused-split-fill and unfocused-split-opacity to current surface
   // this is only applied when a tab has more than one surface
   Revealer {
     reveal-child: bind $should_unfocused_split_be_shown(template.unfocused-split) as <bool>;