diff --git a/src/core/util/debug.js b/src/core/util/debug.js
index 12fd78c8..b4f2f09d 100644
--- a/src/core/util/debug.js
+++ b/src/core/util/debug.js
@@ -15,7 +15,7 @@ if (process.env.NODE_ENV !== 'production') {
 
   formatComponentName = vm => {
     if (vm.$root === vm) {
-      return ' (found in root instnace)'
+      return ' (found in root instance)'
     }
     const name = vm._isVue
       ? vm.$options.name || vm.$options._componentTag