diff --git a/images/shiori/run.sh b/images/shiori/run.sh
index ebf6587..0a34764 100755
--- a/images/shiori/run.sh
+++ b/images/shiori/run.sh
@@ -19,7 +19,7 @@ fi
 cd "${data_dir}" || { echo "Error: Failed to cd into '${data_dir}' (have you checked the permissions?)"; exit 2; };
 
 if [[ "${1}" == "serve" ]]; then
-	exec /srv/shiori "$@" -port "${port}";
+	exec /srv/shiori "$@" --port "${port}";
 else
 	exec /srv/shiori "$@";
 fi