diff --git a/interactor.js b/interactor.js
index 5c9997f..035094c 100644
--- a/interactor.js
+++ b/interactor.js
@@ -8,7 +8,10 @@ export class Interactor {
 
   constructor(initialReaction = new Reaction()) {
     this.#actions.listen((action) => {
-      this[`_handle${action.constructor.name}`](action);
+      let funcRef = `_handle${action.constructor.name}`;
+      if (!this[funcRef])
+        throw `${this.constructor.name} does not have a handler defined for the action "${action.constructor.name}". Create one by adding a function definition named "${funcRef}" in the ${this.constructor.name} class.`;
+      this[funcRef](action);
     });
     this._react(initialReaction);
   }
diff --git a/package.json b/package.json
index f51c54d..1c44efc 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "interactor",
-  "version": "1.1.2",
+  "version": "1.1.3",
   "description": "Cross-element communications and state management utility.",
   "author": "Bryce Thorup",
   "type": "module",