diff --git a/src/types/OLrendering.ts b/src/types/OLrendering.ts
index a117dea712eac055fab31a6b96d1965bac0cdc5e..bb96d0c1619680cf7ada55150ee2ca59e7aa971d 100644
--- a/src/types/OLrendering.ts
+++ b/src/types/OLrendering.ts
@@ -5,9 +5,9 @@ export type OverlayBioEntityRenderType = 'line' | 'rectangle' | 'submap-link';
 export type OverlayBioEntityRender = {
   id: number | string;
   modelId: number;
-  /** bottom left corner of whole element, Xmin */
+  /** bottom left corner of whole element, xMin */
   x1: number;
-  /** bottom left corner of whole element, Ymin */
+  /** bottom left corner of whole element, yMin */
   y1: number;
   /** top right corner of whole element, xMax */
   x2: number;