diff --git a/.github/workflows/laravel.yml b/.github/workflows/laravel.yml
new file mode 100644
index 0000000..81b45b2
--- /dev/null
+++ b/.github/workflows/laravel.yml
@@ -0,0 +1,16 @@
+name: Laravel
+
+on:
+  push:
+    branches: [ "master" ]
+  pull_request:
+    branches: [ "master" ]
+
+jobs:
+  laravel-tests:
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: my-step
+        run: echo "Hello World!"
diff --git a/resources/js/components/NestedFormField.vue b/resources/js/components/NestedFormField.vue
index b32fdd0..f2fbd94 100644
--- a/resources/js/components/NestedFormField.vue
+++ b/resources/js/components/NestedFormField.vue
@@ -183,7 +183,7 @@ export default {
             shouldDisplay.push(values.every((v) => v !== isNot));
           } else if (isNotNull) {
             shouldDisplay.push(values.every((v) => Boolean(v)));
-          } else if (isNull) {
+          } else if (typeof isNull !== "undefined" && isNull) {
             shouldDisplay.push(values.every((v) => !Boolean(v)));
           } else if (typeof isMoreThan !== "undefined") {
             shouldDisplay.push(values.every((v) => v > isMoreThan));