diff --git a/core/workspace_svg.js b/core/workspace_svg.js
index 34dfb2750..dad558f93 100644
--- a/core/workspace_svg.js
+++ b/core/workspace_svg.js
@@ -360,7 +360,7 @@ Blockly.WorkspaceSvg.prototype.addFlyout_ = function() {
     disabledPatternId: this.options.disabledPatternId,
     parentWorkspace: this,
     RTL: this.RTL,
-    oneBasedIndex: workspace.options.oneBasedIndex,
+    oneBasedIndex: this.options.oneBasedIndex,
     horizontalLayout: this.horizontalLayout,
     toolboxPosition: this.options.toolboxPosition
   };