diff --git a/src/Migration/Destinations/Appwrite.php b/src/Migration/Destinations/Appwrite.php
index f6c89809..d816c1ad 100644
--- a/src/Migration/Destinations/Appwrite.php
+++ b/src/Migration/Destinations/Appwrite.php
@@ -1335,7 +1335,7 @@ private function syncVectorDimension(Column|Attribute $resource, string $type, U
             return;
         }
 
-        if ((int) $table->getAttribute('dimension', 0) === $resource->getSize()) {
+        if ((int) $table->getAttribute('dimension', 0) !== 0) {
             return;
         }
 
diff --git a/src/Migration/Resources/Database/Collection.php b/src/Migration/Resources/Database/Collection.php
index 25dedf93..46a433e3 100644
--- a/src/Migration/Resources/Database/Collection.php
+++ b/src/Migration/Resources/Database/Collection.php
@@ -72,8 +72,12 @@ public function setDimension(?int $dimension): self
      */
     public function jsonSerialize(): array
     {
-        return array_merge(parent::jsonSerialize(), [
-            'dimension' => $this->dimension,
-        ]);
+        $data = parent::jsonSerialize();
+
+        if ($this->dimension !== null) {
+            $data['dimension'] = $this->dimension;
+        }
+
+        return $data;
     }
 }
diff --git a/tests/Migration/Unit/Resources/CollectionTest.php b/tests/Migration/Unit/Resources/CollectionTest.php
index f89ed938..faa4edc3 100644
--- a/tests/Migration/Unit/Resources/CollectionTest.php
+++ b/tests/Migration/Unit/Resources/CollectionTest.php
@@ -53,6 +53,6 @@ public function testDimensionDefaultsToNull(): void
         ]);
 
         $this->assertNull($collection->getDimension());
-        $this->assertNull($collection->jsonSerialize()['dimension']);
+        $this->assertArrayNotHasKey('dimension', $collection->jsonSerialize());
     }
 }