diff --git a/panel/backends/lxqttaskbartypes.h b/panel/backends/lxqttaskbartypes.h
index dc82f980c..e821b410d 100644
--- a/panel/backends/lxqttaskbartypes.h
+++ b/panel/backends/lxqttaskbartypes.h
@@ -78,7 +78,7 @@ enum class LXQtTaskBarWindowLayer
 
 enum class LXQtTaskBarWorkspace
 {
-    ShowOnAll = -1
+    ShowOnAll = 0 // Virtual destops have 1-based indexes
 };
 
 #endif // LXQTTASKBARTYPES_H