diff --git a/doc/docs/extension/procedural-data-provider.md b/doc/docs/extension/procedural-data-provider.md
index 3409e03f..1133ab13 100644
--- a/doc/docs/extension/procedural-data-provider.md
+++ b/doc/docs/extension/procedural-data-provider.md
@@ -191,6 +191,7 @@ class ProceduralDataProvider extends DataProviderBase {
     this.sequences = sequences;
     this.cells = generateCells(images, this._geometry);
   }
+}
 ```
 
 ### `getCluster`