diff --git a/src/Illuminate/Database/Eloquent/Casts/AsEncryptedArrayObject.php b/src/Illuminate/Database/Eloquent/Casts/AsEncryptedArrayObject.php
index 68273a5e5240..cd65624650ec 100644
--- a/src/Illuminate/Database/Eloquent/Casts/AsEncryptedArrayObject.php
+++ b/src/Illuminate/Database/Eloquent/Casts/AsEncryptedArrayObject.php
@@ -29,7 +29,7 @@ public function get($model, $key, $value, $attributes)
 
             public function set($model, $key, $value, $attributes)
             {
-                if ($value !== null) {
+                if (! is_null($value)) {
                     return [$key => Crypt::encryptString(json_encode($value))];
                 }
 
@@ -38,7 +38,7 @@ public function set($model, $key, $value, $attributes)
 
             public function serialize($model, string $key, $value, array $attributes)
             {
-                return $value !== null ? $value->getArrayCopy() : null;
+                return ! is_null($value) ? $value->getArrayCopy() : null;
             }
         };
     }
diff --git a/src/Illuminate/Database/Eloquent/Casts/AsEncryptedCollection.php b/src/Illuminate/Database/Eloquent/Casts/AsEncryptedCollection.php
index 0021861e1254..4d9fee7ece85 100644
--- a/src/Illuminate/Database/Eloquent/Casts/AsEncryptedCollection.php
+++ b/src/Illuminate/Database/Eloquent/Casts/AsEncryptedCollection.php
@@ -30,7 +30,7 @@ public function get($model, $key, $value, $attributes)
 
             public function set($model, $key, $value, $attributes)
             {
-                if ($value !== null) {
+                if (! is_null($value)) {
                     return [$key => Crypt::encryptString(json_encode($value))];
                 }