diff --git a/UI/AppKit/Interface/TabController.mm b/UI/AppKit/Interface/TabController.mm
index bf1bb4f7c83..fce0b37330b 100644
--- a/UI/AppKit/Interface/TabController.mm
+++ b/UI/AppKit/Interface/TabController.mm
@@ -103,7 +103,9 @@ static NSString* const TOOLBAR_TAB_OVERVIEW_IDENTIFIER = @"ToolbarTabOverviewIde
         self.toolbar = [[NSToolbar alloc] initWithIdentifier:TOOLBAR_IDENTIFIER];
         [self.toolbar setDelegate:self];
         [self.toolbar setDisplayMode:NSToolbarDisplayModeIconOnly];
-        [self.toolbar setAllowsDisplayModeCustomization:NO];
+        if (@available(macOS 15, *)) {
+            [self.toolbar setAllowsDisplayModeCustomization:NO];
+        }
         [self.toolbar setAllowsUserCustomization:NO];
         [self.toolbar setSizeMode:NSToolbarSizeModeRegular];