diff --git a/.github/vale/config/vocabularies/Docker/accept.txt b/.github/vale/config/vocabularies/Docker/accept.txt
index 914c31b18f..07ec27e1df 100644
--- a/.github/vale/config/vocabularies/Docker/accept.txt
+++ b/.github/vale/config/vocabularies/Docker/accept.txt
@@ -165,6 +165,7 @@ stdin
 stdout
 subnet
 systemd
+tmpfs
 ufw
 umask
 ungated
diff --git a/content/storage/tmpfs.md b/content/storage/tmpfs.md
index ca69addb00..522c751180 100644
--- a/content/storage/tmpfs.md
+++ b/content/storage/tmpfs.md
@@ -112,10 +112,10 @@ $ docker rm tmptest
 required. If you need to specify these options, you must use the `--mount` flag,
 as the `--tmpfs` flag does not support them.
 
-| Option       | Description                                                                                           |
-|:-------------|:------------------------------------------------------------------------------------------------------|
-| `tmpfs-size` | Size of the tmpfs mount in bytes. Unlimited by default.                                               |
-| `tmpfs-mode` | File mode of the tmpfs in octal. For instance, `700` or `0770`. Defaults to `1777` or world-writable. |
+| Option       | Description                                                                                                               |
+|:-------------|:--------------------------------------------------------------------------------------------------------------------------|
+| `tmpfs-size` | Size of the tmpfs mount in bytes. If unset, the default maximum size of a tmpfs volume is 50% of the host's total RAM.    |
+| `tmpfs-mode` | File mode of the tmpfs in octal. For instance, `700` or `0770`. Defaults to `1777` or world-writable.                     |
 
 The following example sets the `tmpfs-mode` to `1770`, so that it is not
 world-readable within the container.