1 files changed, 2 insertions, 2 deletions
diff --git a/backup.in b/backup.in
index 38ed466..5ccb617 100755
--- a/backup.in
+++ b/backup.in
@@ -1,8 +1,8 @@
 #!/bin/bash
 
 rsyncOptions='-vxcaHAXF'
-rsync --may-modify-others 2>&1 | \
-  grep -q 'unknown option' ||
+rsync --help | \
+  grep -q -- --may-modify-others && \
   rsyncOptions="${rsyncOptions} --may-modify-others"
 
 [ -r "#ETCDIR#/backup.conf" ] && \