diff --git a/common/changes/@uifabric/utilities/tagpicker-ie_2018-08-16-20-30.json b/common/changes/@uifabric/utilities/tagpicker-ie_2018-08-16-20-30.json
new file mode 100644
index 0000000000000..7ca2e2edae97d
--- /dev/null
+++ b/common/changes/@uifabric/utilities/tagpicker-ie_2018-08-16-20-30.json
@@ -0,0 +1,11 @@
+{
+  "changes": [
+    {
+      "comment": "",
+      "packageName": "@uifabric/utilities",
+      "type": "none"
+    }
+  ],
+  "packageName": "@uifabric/utilities",
+  "email": "kakje@microsoft.com"
+}
\ No newline at end of file
diff --git a/common/changes/office-ui-fabric-react/tagpicker-ie_2018-08-16-20-30.json b/common/changes/office-ui-fabric-react/tagpicker-ie_2018-08-16-20-30.json
new file mode 100644
index 0000000000000..9620a02bf6dce
--- /dev/null
+++ b/common/changes/office-ui-fabric-react/tagpicker-ie_2018-08-16-20-30.json
@@ -0,0 +1,11 @@
+{
+  "changes": [
+    {
+      "packageName": "office-ui-fabric-react",
+      "comment": "Autofill: prevent onInputChange from being called on IE11 inputs with a placeholder",
+      "type": "patch"
+    }
+  ],
+  "packageName": "office-ui-fabric-react",
+  "email": "kakje@microsoft.com"
+}
\ No newline at end of file
diff --git a/packages/office-ui-fabric-react/src/components/Autofill/Autofill.tsx b/packages/office-ui-fabric-react/src/components/Autofill/Autofill.tsx
index a092eb552ced1..277bdb3a1176b 100644
--- a/packages/office-ui-fabric-react/src/components/Autofill/Autofill.tsx
+++ b/packages/office-ui-fabric-react/src/components/Autofill/Autofill.tsx
@@ -254,6 +254,11 @@ export class Autofill extends BaseComponent<IAutofillProps, IAutofillState> impl
    * @param newValue The new value from the input
    */
   private _updateValue = (newValue: string) => {
+    // Only proceed if the value is nonempty and is different from the old value
+    // This is to work around the fact that, in IE 11, inputs with a placeholder fire an onInput event on focus
+    if (!newValue && newValue === this._value) {
+      return;
+    }
     this._value = this.props.onInputChange ? this.props.onInputChange(newValue) : newValue;
     this.setState(
       {
diff --git a/packages/utilities/src/Customizer.tsx b/packages/utilities/src/Customizer.tsx
index d09c0e6533c07..e176ef18cdfe4 100644
--- a/packages/utilities/src/Customizer.tsx
+++ b/packages/utilities/src/Customizer.tsx
@@ -74,8 +74,7 @@ export class Customizer extends BaseComponent<ICustomizerProps, ICustomizerConte
 
   public static childContextTypes: {
     customizations: PropTypes.Requireable<{}>;
-  } =
-    Customizer.contextTypes;
+  } = Customizer.contextTypes;
 
   // tslint:disable-next-line:no-any
   constructor(props: ICustomizerProps, context: any) {