diff --git a/types/openlayers/index.d.ts b/types/openlayers/index.d.ts
index a4d4f52d5e..a6122c8477 100644
--- a/types/openlayers/index.d.ts
+++ b/types/openlayers/index.d.ts
@@ -1734,7 +1734,7 @@ export class Feature extends Object {
      * @api stable
      * @observable
      */
-    setStyle(style: (ol.style.Style | ol.style.Style[] | ol.FeatureStyleFunction | ol.StyleFunction)): void;
+    setStyle(style: (ol.style.Style | ol.style.Style[] | ol.FeatureStyleFunction | ol.StyleFunction | null)): void;
 
     /**
      * Set the feature id.  The feature id is considered stable and may be used when
@@ -6424,7 +6424,7 @@ export namespace layer {
          * @param style Layer style.
          * @api stable
          */
-        setStyle(style: (ol.style.Style | ol.style.Style[] | ol.StyleFunction)): void;
+        setStyle(style: (ol.style.Style | ol.style.Style[] | ol.StyleFunction | null)): void;
     }
 
     /**
diff --git a/types/openlayers/openlayers-tests.ts b/types/openlayers/openlayers-tests.ts
index d97a96c9de..fcf925886d 100644
--- a/types/openlayers/openlayers-tests.ts
+++ b/types/openlayers/openlayers-tests.ts
@@ -411,6 +411,7 @@ feature.setGeometry(geometry);
 feature.setGeometryName(stringValue);
 feature.setId(stringValue);
 feature.setId(numberValue);
+feature.setStyle(null);
 feature.setStyle(style);
 feature.setStyle(styleArray);
 feature.setStyle(featureStyleFunction);