diff --git a/store.js b/store.js
index 9405ccb0d0ce..84b0ba45955a 100644
--- a/store.js
+++ b/store.js
@@ -162,7 +162,7 @@ assign(Store.prototype, {
 		let dirty = false;
 
 		for (const key in newState) {
-			if (this._computed[key]) throw new Error(`'${key}' is a read-only property`);
+			if (this._computed[key]) throw new Error(`'${key}' is a read-only computed property`);
 			if (this._differs(newState[key], oldState[key])) changed[key] = dirty = true;
 		}
 		if (!dirty) return;
diff --git a/test/store/index.js b/test/store/index.js
index 8d5dd5749cf0..bad93b238214 100644
--- a/test/store/index.js
+++ b/test/store/index.js
@@ -118,7 +118,7 @@ describe('store', () => {
 
 			assert.throws(() => {
 				store.set({ bar: 'whatever' });
-			}, /'bar' is a read-only property/);
+			}, /'bar' is a read-only computed property/);
 		});
 
 		it('allows multiple dependents to depend on the same computed property', () => {