diff --git a/src/community/ogcapi/ogcapi-images/src/main/java/org/geoserver/api/images/STACItemFeaturesResponse.java b/src/community/ogcapi/ogcapi-images/src/main/java/org/geoserver/api/images/STACItemFeaturesResponse.java
index 60b45415861..1e8bede8d4c 100644
--- a/src/community/ogcapi/ogcapi-images/src/main/java/org/geoserver/api/images/STACItemFeaturesResponse.java
+++ b/src/community/ogcapi/ogcapi-images/src/main/java/org/geoserver/api/images/STACItemFeaturesResponse.java
@@ -273,9 +273,15 @@ protected void writeCollectionBounds(
         // not needed in WFS3
     }
 
-    /** capabilities output format string. */
+    /**
+     * {@inheritDoc}
+     *
+     * @return {@code null}, making {@link WFSGetFeatureOutputFormat#getCapabilitiesElementNames()}
+     *     not contributing a result format on the GetCapabilities document for this output format.
+     */
+    @Override
     public String getCapabilitiesElementName() {
-        throw new UnsupportedOperationException();
+        return null;
     }
 
     @Override