diff --git a/common/changes/office-ui-fabric-react/Sticky_2018-02-24-15-18.json b/common/changes/office-ui-fabric-react/Sticky_2018-02-24-15-18.json
new file mode 100644
index 0000000000000..dfd2b18bb0cfa
--- /dev/null
+++ b/common/changes/office-ui-fabric-react/Sticky_2018-02-24-15-18.json
@@ -0,0 +1,11 @@
+{
+  "changes": [
+    {
+      "packageName": "office-ui-fabric-react",
+      "comment": "Fix this.root undefined issue in Sticky component.",
+      "type": "patch"
+    }
+  ],
+  "packageName": "office-ui-fabric-react",
+  "email": "s@warmsea.net"
+}
\ No newline at end of file
diff --git a/packages/office-ui-fabric-react/src/components/Sticky/Sticky.tsx b/packages/office-ui-fabric-react/src/components/Sticky/Sticky.tsx
index 2c5934ccba9c2..a0980248e9a54 100644
--- a/packages/office-ui-fabric-react/src/components/Sticky/Sticky.tsx
+++ b/packages/office-ui-fabric-react/src/components/Sticky/Sticky.tsx
@@ -130,7 +130,7 @@ export class Sticky extends BaseComponent<IStickyProps, IStickyState> {
     const isSticky = isStickyTop || isStickyBottom;
 
     return (
-      <div ref={ this._resolveRef('_root') }>
+      <div ref={ this._resolveRef('root') }>
         <div style={ { height: (isSticky ? placeholderHeight : 0) } } />
       </div>
     );