diff --git a/mail-server/common.nix b/mail-server/common.nix
index 4e301c5..813a5f4 100644
--- a/mail-server/common.nix
+++ b/mail-server/common.nix
@@ -62,7 +62,7 @@ in
 
     cat ${file} > ${destination}
     echo -n '${prefix}' >> ${destination}
-    cat ${passwordFile} >> ${destination}
+    cat ${passwordFile} | tr -d '\n' >> ${destination}
     echo -n '${suffix}' >> ${destination}
     chmod 600 ${destination}
   '';