diff --git a/packages/behavior/types.hooks.js b/packages/behavior/types.hooks.js
index 4d4af50..e7febde 100644
--- a/packages/behavior/types.hooks.js
+++ b/packages/behavior/types.hooks.js
@@ -50,6 +50,10 @@ export function behaviorTypes() {
             }],
           ],
         },
+        nop: {
+          type: 'void',
+          label: '- Nothing -',
+        },
         parallel: {
           type: 'void',
           label: 'Run $1 in parallel.',
diff --git a/packages/behavior/types/flow.js b/packages/behavior/types/flow.js
index 3d75a74..e754127 100644
--- a/packages/behavior/types/flow.js
+++ b/packages/behavior/types/flow.js
@@ -8,6 +8,8 @@ export default {
     }
   },
 
+  nop: () => {},
+
   parallel: (expressions, context) => {
     return (new Actions(expressions)).parallel(context);
   },