diff --git a/src/apprt/gtk/Surface.zig b/src/apprt/gtk/Surface.zig
index 8e393a2bc..fd7b62cdc 100644
--- a/src/apprt/gtk/Surface.zig
+++ b/src/apprt/gtk/Surface.zig
@@ -808,7 +808,7 @@ pub fn gotoTab(self: *Surface, tab: apprt.GotoTab) void {
         .previous => window.gotoPreviousTab(self),
         .next => window.gotoNextTab(self),
         .last => window.gotoLastTab(),
-        else => window.gotoTab(@intFromEnum(tab)),
+        else => window.gotoTab(@intCast(@intFromEnum(tab))),
     }
 }