diff --git a/common/changes/office-ui-fabric-react/mapol-fix-onMenuClick-firing-on-every-key-down_2018-04-14-10-09.json b/common/changes/office-ui-fabric-react/mapol-fix-onMenuClick-firing-on-every-key-down_2018-04-14-10-09.json
new file mode 100644
index 00000000000000..ea531e6888d2f8
--- /dev/null
+++ b/common/changes/office-ui-fabric-react/mapol-fix-onMenuClick-firing-on-every-key-down_2018-04-14-10-09.json
@@ -0,0 +1,11 @@
+{
+  "changes": [
+    {
+      "packageName": "office-ui-fabric-react",
+      "comment": "Do not call the onMenuClick on every keyDown event",
+      "type": "patch"
+    }
+  ],
+  "packageName": "office-ui-fabric-react",
+  "email": "mark@thedutchies.com"
+}
\ No newline at end of file
diff --git a/packages/office-ui-fabric-react/src/components/Button/BaseButton.tsx b/packages/office-ui-fabric-react/src/components/Button/BaseButton.tsx
index 06c66aee2304b6..7cbdaeca15f986 100644
--- a/packages/office-ui-fabric-react/src/components/Button/BaseButton.tsx
+++ b/packages/office-ui-fabric-react/src/components/Button/BaseButton.tsx
@@ -570,14 +570,13 @@ export class BaseButton extends BaseComponent<IBaseButtonProps, IBaseButtonState
       this.props.onKeyDown(ev);
     }
 
-    const { onMenuClick } = this.props;
-    if (onMenuClick) {
-      onMenuClick(ev, this);
-    }
-
     if (!ev.defaultPrevented &&
-      this.props.menuTriggerKeyCode !== null &&
       this._isValidMenuOpenKey(ev)) {
+      const { onMenuClick } = this.props;
+      if (onMenuClick) {
+        onMenuClick(ev, this);
+      }
+
       this._onToggleMenu();
       ev.preventDefault();
       ev.stopPropagation();