diff --git a/compose/reference/logs.md b/compose/reference/logs.md
index 297ff334e4..f74c123f5b 100644
--- a/compose/reference/logs.md
+++ b/compose/reference/logs.md
@@ -12,7 +12,7 @@ Options:
 --no-color          Produce monochrome output.
 -f, --follow        Follow log output
 -t, --timestamps    Show timestamps
---tail              Number of lines to show from the end of the logs
+--tail="all"        Number of lines to show from the end of the logs
                     for each container.
 ```