diff --git a/lib/manager/docker-compose/extract.ts b/lib/manager/docker-compose/extract.ts
index 606859ec49fdc96ab81fb61b7cf323574c0dc6d8..b6cb474345a9f46b00c5ba8e52c9632f310f5131 100644
--- a/lib/manager/docker-compose/extract.ts
+++ b/lib/manager/docker-compose/extract.ts
@@ -50,6 +50,7 @@ export function extractPackageFile(
         { fileName, content },
         'Null config when parsing Docker Compose content'
       );
+      return null;
     }
   } catch (err) {
     logger.warn({ fileName, err }, 'Parsing Docker Compose config YAML');