diff --git a/src/docker.js b/src/docker.js
index 7f94f2279..e0cac105a 100644
--- a/src/docker.js
+++ b/src/docker.js
@@ -512,7 +512,7 @@ async function deleteImage(manifest) {
 
     const dockerImage = manifest ? manifest.dockerImage : null;
     if (!dockerImage) return;
-    if (dockerImage.includes('//')) return; // a common mistake is to paste a https:// as docker image. this results in a crash at runtime in dockerode module
+    if (dockerImage.includes('//')) return; // a common mistake is to paste a https:// as docker image. this results in a crash at runtime in dockerode module (https://github.com/apocas/dockerode/issues/548)
 
     const removeOptions = {
         force: false, // might be shared with another instance of this app