diff --git a/src/components/Blockly/blocks/logic.js b/src/components/Blockly/blocks/logic.js
index 5feb5b7..fb8ec68 100644
--- a/src/components/Blockly/blocks/logic.js
+++ b/src/components/Blockly/blocks/logic.js
@@ -19,7 +19,7 @@ Blockly.defineBlocksWithJsonArray([  // BEGIN JSON EXTRACT
                 ]
             }
         ],
-        "output": "Boolean",
+        "output": Types.BOOLEAN.typeName,
         "style": "logic_blocks",
         "tooltip": "%{BKY_LOGIC_BOOLEAN_TOOLTIP}",
         "helpUrl": "%{BKY_LOGIC_BOOLEAN_HELPURL}"
diff --git a/src/components/Blockly/helpers/types.js b/src/components/Blockly/helpers/types.js
index 48def90..9abdd85 100644
--- a/src/components/Blockly/helpers/types.js
+++ b/src/components/Blockly/helpers/types.js
@@ -18,7 +18,7 @@ export const CHARACTER = {
 
 export const BOOLEAN = {
     typeId: 'Boolean',
-    typeName: 'Boolean',
+    typeName: 'boolean',
     typeMsgName: 'ARD_TYPE_BOOL',
 }