diff --git a/src/containers/blocks.jsx b/src/containers/blocks.jsx
index b659cc7145ce01bc2a7e00060953f39ddc703730..b2648e7b78b37f2298073e09102b0e02d4e4f2fc 100644
--- a/src/containers/blocks.jsx
+++ b/src/containers/blocks.jsx
@@ -338,7 +338,7 @@ class Blocks extends React.Component {
             const stageCostumes = stage.getCostumes();
             const targetCostumes = target.getCostumes();
             const targetSounds = target.getSounds();
-            const dynamicBlocksXML = this.props.vm.runtime.getBlocksXML();
+            const dynamicBlocksXML = this.props.vm.runtime.getBlocksXML(target);
             return makeToolboxXML(target.isStage, target.id, dynamicBlocksXML,
                 targetCostumes[targetCostumes.length - 1].name,
                 stageCostumes[stageCostumes.length - 1].name,