1 files changed, 1 insertions, 1 deletions

diff --git a/src/man/firejail-profile.txt b/src/man/firejail-profile.txt
index e91c5c089..2f17c3088 100644
--- a/src/man/firejail-profile.txt
+++ b/src/man/firejail-profile.txt
@@ -126,7 +126,7 @@ blacklist ${HOME}/.ssh
 Make directory or file read-only.
 .TP
 \fBtmpfs directory
-Mount an empty tmpfs filesystem on top of directory.
+Mount an empty tmpfs filesystem on top of directory. This option is available only when running the sandbox as root.
 .TP
 \fBbind directory1,directory2
 Mount-bind directory1 on top of directory2. This option is only available when running as root.