diff --git a/doc.zih.tu-dresden.de/docs/data_lifecycle/permanent.md b/doc.zih.tu-dresden.de/docs/data_lifecycle/permanent.md
index ffa7d95211b143ae9ebecc7385b1cec36853ada1..fd9dc7289dc863bac1940a492b669e324239ca81 100644
--- a/doc.zih.tu-dresden.de/docs/data_lifecycle/permanent.md
+++ b/doc.zih.tu-dresden.de/docs/data_lifecycle/permanent.md
@@ -4,7 +4,7 @@ Do not use permanent file systems as work directories:
 
 - Even temporary files are kept in the snapshots and in the backup tapes over a long time,
 senseless filling the disks,
-- By the sheer number and volume of work files they may keep the backup from working efficiently.
+- By the sheer number and volume of work files, they may keep the backup from working efficiently.
 
 ## Global /home File System