diff --git a/.eslintrc b/.eslintrc
new file mode 100644
index 00000000..26408a80
--- /dev/null
+++ b/.eslintrc
@@ -0,0 +1,13 @@
+---
+plugins:
+  - "react"
+env: {
+    es6: true
+}
+ecmaFeatures: {
+    modules: true,
+    jsx: true
+}
+rules:
+  valid-jsdoc: [2, { "requireReturn": false }]
+  'react/jsx-uses-react': [1]
diff --git a/package.json b/package.json
index 520a60ae..8c00a45b 100644
--- a/package.json
+++ b/package.json
@@ -63,52 +63,6 @@
     "react": "^0.14.2",
     "xunit-file": "~0.0.9"
   },
-  "eslintConfig": {
-    "rules": {
-      "space-before-function-paren": 2,
-      "valid-jsdoc": [
-        2,
-        {
-          "requireReturn": false,
-          "requireReturnDescription": false
-        }
-      ],
-      "no-else-return": 2,
-      "no-extra-bind": 2,
-      "no-multi-spaces": 2,
-      "no-useless-call": 2,
-      "radix": 2,
-      "handle-callback-err": [
-        2,
-        "^(err|error)$"
-      ],
-      "array-bracket-spacing": 2,
-      "block-spacing": 2,
-      "comma-spacing": 2,
-      "jsx-quotes": [
-        2,
-        "prefer-single"
-      ],
-      "no-multiple-empty-lines": 2,
-      "no-trailing-spaces": 2,
-      "sort-vars": 2,
-      "space-after-keywords": 2,
-      "space-before-blocks": 2,
-      "space-infix-ops": 2,
-      "space-return-throw-case": 2,
-      "wrap-regex": 2,
-      "new-cap": 0
-    },
-    "plugins": [
-      "react"
-    ],
-    "ecmaFeatures": {
-      "jsx": true
-    },
-    "env": {
-      "es6": true
-    }
-  },
   "peerDependencies": {
     "react": "^0.14.2",
     "react-dom": "^0.14.2"
diff --git a/src/Sticky.jsx b/src/Sticky.jsx
index 4b25f4c1..4f79714d 100644
--- a/src/Sticky.jsx
+++ b/src/Sticky.jsx
@@ -149,7 +149,7 @@ class Sticky extends Component {
         var outerRect = outer.getBoundingClientRect();
         var innerRect = inner.getBoundingClientRect();
 
-        var width = innerRect.width || innerRect.right - innerRect.left;
+        var width = outerRect.width || outerRect.right - outerRect.left;
         var height = innerRect.height || innerRect.bottom - innerRect.top;;
         var outerY = outerRect.top + scrollTop;