diff --git a/extensions/cornerstone/src/toolbarModule.js b/extensions/cornerstone/src/toolbarModule.js
index 5a5d2c0a0..ff34cd802 100644
--- a/extensions/cornerstone/src/toolbarModule.js
+++ b/extensions/cornerstone/src/toolbarModule.js
@@ -69,6 +69,15 @@ const definitions = [
     commandName: 'setToolActive',
     commandOptions: { toolName: 'Length' },
   },
+  {
+    id: 'ArrowAnnotate',
+    label: 'Annotate',
+    icon: 'measure-non-target',
+    //
+    type: TOOLBAR_BUTTON_TYPES.COMMAND,
+    commandName: 'setToolActive',
+    commandOptions: { toolName: 'ArrowAnnotate' },
+  },
   {
     id: 'Angle',
     label: 'Angle',