diff --git a/contrib/completion/zsh/_docker b/contrib/completion/zsh/_docker
index b5be7cff39..cebaf07bdd 100644
--- a/contrib/completion/zsh/_docker
+++ b/contrib/completion/zsh/_docker
@@ -463,7 +463,7 @@ __docker_subcommand() {
         "($help -a --attach)"{-a=,--attach=}"[Attach to stdin, stdout or stderr]:device:(STDIN STDOUT STDERR)"
         "($help)*--add-host=[Add a custom host-to-IP mapping]:host\:ip mapping: "
         "($help)--blkio-weight=[Block IO (relative weight), between 10 and 1000]:Block IO weight:(10 100 500 1000)"
-        "($help)--blkio-weight-device=-[Block IO (relative device weight)]:device:Block IO weight: "
+        "($help)*--blkio-weight-device=[Block IO (relative device weight)]:device:Block IO weight: "
         "($help)*--cap-add=[Add Linux capabilities]:capability: "
         "($help)*--cap-drop=[Drop Linux capabilities]:capability: "
         "($help)--cidfile=[Write the container ID to the file]:CID file:_files"
diff --git a/docs/reference/commandline/create.md b/docs/reference/commandline/create.md
index f05c2d00dc..982d3b6a4e 100644
--- a/docs/reference/commandline/create.md
+++ b/docs/reference/commandline/create.md
@@ -19,7 +19,7 @@ Creates a new container.
       -a, --attach=[]               Attach to STDIN, STDOUT or STDERR
       --add-host=[]                 Add a custom host-to-IP mapping (host:ip)
       --blkio-weight=0              Block IO weight (relative weight)
-      --blkio-weight-device=""      Block IO weight (relative device weight, format: `DEVICE_NAME:WEIGHT`)
+      --blkio-weight-device=[]      Block IO weight (relative device weight, format: `DEVICE_NAME:WEIGHT`)
       --cpu-shares=0                CPU shares (relative weight)
       --cap-add=[]                  Add Linux capabilities
       --cap-drop=[]                 Drop Linux capabilities
diff --git a/docs/reference/commandline/run.md b/docs/reference/commandline/run.md
index 7015991ea6..61f0480474 100644
--- a/docs/reference/commandline/run.md
+++ b/docs/reference/commandline/run.md
@@ -17,7 +17,7 @@ parent = "smn_cli"
       -a, --attach=[]               Attach to STDIN, STDOUT or STDERR
       --add-host=[]                 Add a custom host-to-IP mapping (host:ip)
       --blkio-weight=0              Block IO weight (relative weight)
-      --blkio-weight-device=""      Block IO weight (relative device weight, format: `DEVICE_NAME:WEIGHT`)
+      --blkio-weight-device=[]      Block IO weight (relative device weight, format: `DEVICE_NAME:WEIGHT`)
       --cpu-shares=0                CPU shares (relative weight)
       --cap-add=[]                  Add Linux capabilities
       --cap-drop=[]                 Drop Linux capabilities