diff --git a/packages/sdks/src/blocks/image/image.helpers.ts b/packages/sdks/src/blocks/image/image.helpers.ts
index fecc1c9543d..68faf4fa82c 100644
--- a/packages/sdks/src/blocks/image/image.helpers.ts
+++ b/packages/sdks/src/blocks/image/image.helpers.ts
@@ -53,6 +53,8 @@ export function getSrcSet(url: string): string {
     const widthInSrc = Number(url.split('?width=')[1]);
     if (!isNaN(widthInSrc)) {
       srcUrl = `${srcUrl} ${widthInSrc}w`;
+    } else {
+      srcUrl = `${srcUrl} 9999w`; // #3448 every srcset element has to have "w" or "x", otherwise browsers might ignore srcset
     }
 
     return sizes