diff --git a/Libraries/Utilities/MessageQueue.js b/Libraries/Utilities/MessageQueue.js
index 8b15a8eddfe..cc24f575201 100644
--- a/Libraries/Utilities/MessageQueue.js
+++ b/Libraries/Utilities/MessageQueue.js
@@ -202,7 +202,7 @@ class MessageQueue {
       const module = debug && this._remoteModuleTable[debug[0]];
       const method = debug && this._remoteMethodTable[debug[0]][debug[1]];
       if (!callback) {
-        const errorMessage = `Callback with id ${cbID}: ${module}.${method}() not found`;
+        let errorMessage = `Callback with id ${cbID}: ${module}.${method}() not found`;
         if (method) {
           errorMessage = `The callback ${method}() exists in module ${module}, `
           + `but only one callback may be registered to a function in a native module.`;