diff --git a/README.md b/README.md
index 260bc97..e17ca0a 100644
--- a/README.md
+++ b/README.md
@@ -117,7 +117,7 @@ By default, Docker Swarm will restart stopped containers automatically, even whe
 
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-When running in Swarm mode, it's also advised to set a hard memory limit on your service (~25MB should be enough in that case):
+When running in Swarm mode, it's also advised to set a hard memory limit on your service (~25MB should be enough in most cases, but if you backup large files above half a gigabyte or similar, you might have to raise this in case the backup exits with `Killed`):
 
 ```yml
 services: