diff --git a/rootfs/startapp.sh b/rootfs/startapp.sh
index 8f9b397..bb0bd3f 100755
--- a/rootfs/startapp.sh
+++ b/rootfs/startapp.sh
@@ -5,4 +5,5 @@ set -u # Treat unset variables as an error.
 
 export HOME=/config
 mkdir -p /config/profile
+firefox --version
 exec /usr/bin/firefox_wrapper --profile /config/profile --setDefaultBrowser >> /config/log/firefox/output.log 2>> /config/log/firefox/error.log