diff --git a/common/changes/office-ui-fabric-react/IE11-NaN_2018-04-19-15-14.json b/common/changes/office-ui-fabric-react/IE11-NaN_2018-04-19-15-14.json
new file mode 100644
index 00000000000000..a456dd7fa268b3
--- /dev/null
+++ b/common/changes/office-ui-fabric-react/IE11-NaN_2018-04-19-15-14.json
@@ -0,0 +1,11 @@
+{
+  "changes": [
+    {
+      "packageName": "office-ui-fabric-react",
+      "comment": "Remove usage of Number.isNaN from SpinButton.tsx since it doesn't exist in IE11",
+      "type": "patch"
+    }
+  ],
+  "packageName": "office-ui-fabric-react",
+  "email": "christianjordangonzalez@gmail.com"
+}
\ No newline at end of file
diff --git a/packages/office-ui-fabric-react/src/components/SpinButton/SpinButton.tsx b/packages/office-ui-fabric-react/src/components/SpinButton/SpinButton.tsx
index 758cd3c8864860..2740c26768a708 100644
--- a/packages/office-ui-fabric-react/src/components/SpinButton/SpinButton.tsx
+++ b/packages/office-ui-fabric-react/src/components/SpinButton/SpinButton.tsx
@@ -202,8 +202,8 @@ export class SpinButton extends BaseComponent<ISpinButtonProps, ISpinButtonState
             type='text'
             role='spinbutton'
             aria-labelledby={ label && this._labelId }
-            aria-valuenow={ !Number.isNaN(Number(value)) ? Number(value) : undefined }
-            aria-valuetext={ Number.isNaN(Number(value)) ? value : undefined }
+            aria-valuenow={ !isNaN(Number(value)) ? Number(value) : undefined }
+            aria-valuetext={ isNaN(Number(value)) ? value : undefined }
             aria-valuemin={ min }
             aria-valuemax={ max }
             onBlur={ this._onBlur }