diff --git a/lib/modules/versioning/ubuntu/common.ts b/lib/modules/versioning/ubuntu/common.ts
index 580ed6aadf9f90..0cd4b958c7f392 100644
--- a/lib/modules/versioning/ubuntu/common.ts
+++ b/lib/modules/versioning/ubuntu/common.ts
@@ -25,7 +25,7 @@ function getDatedContainerImageVersion(version: string): null | number {
 
 function getDatedContainerImageSuffix(version: string): null | string {
   const groups = regex.exec(version);
-  if (!groups?.groups) {
+  if (!groups?.groups?.suffix) {
     return null;
   }