diff --git a/docs/reference/commandline/node_ps.md b/docs/reference/commandline/node_ps.md
index 0c54c9cfb0..7a4054bebe 100644
--- a/docs/reference/commandline/node_ps.md
+++ b/docs/reference/commandline/node_ps.md
@@ -22,7 +22,7 @@ Usage:  docker node ps [OPTIONS] [NODE...]
 List tasks running on one or more nodes, defaults to current node.
 
 Options:
-  -a, --all            Display all instances
+  -a, --all            Show all tasks (default shows tasks that are or will be running)
   -f, --filter value   Filter output based on conditions provided
       --help           Print usage
       --no-resolve     Do not map IDs to Names
diff --git a/docs/reference/commandline/service_ps.md b/docs/reference/commandline/service_ps.md
index 87c06cd762..b12c5a4add 100644
--- a/docs/reference/commandline/service_ps.md
+++ b/docs/reference/commandline/service_ps.md
@@ -22,6 +22,7 @@ Usage:  docker service ps [OPTIONS] SERVICE
 List the tasks of a service
 
 Options:
+  -a, --all             Show all tasks (default shows tasks that are or will be running)
   -f, --filter filter   Filter output based on conditions provided
       --help            Print usage
       --no-resolve      Do not map IDs to Names