diff --git a/core/field_dropdown.js b/core/field_dropdown.js
index 5dad752d85c..5bebbfdc495 100644
--- a/core/field_dropdown.js
+++ b/core/field_dropdown.js
@@ -297,6 +297,9 @@ Blockly.FieldDropdown.prototype.showEditor_ = function(opt_e) {
   } else {
     this.menu_.openingCoords = null;
   }
+
+  // Remove any pre-existing elements in the dropdown.
+  Blockly.DropDownDiv.clearContent();
   // Element gets created in render.
   this.menu_.render(Blockly.DropDownDiv.getContentDiv());
   var menuElement = /** @type {!Element} */ (this.menu_.getElement());