diff --git a/.agents/skills/multi-agent-mux-create/scripts/create_session.sh b/.agents/skills/multi-agent-mux-create/scripts/create_session.sh
index ef9e0d7..351fd48 100755
--- a/.agents/skills/multi-agent-mux-create/scripts/create_session.sh
+++ b/.agents/skills/multi-agent-mux-create/scripts/create_session.sh
@@ -85,7 +85,6 @@ if [ -n "$HERDR_SERVER_OPT" ]; then
   export HERDR_SESSION_NAME="$HERDR_SERVER_OPT"
 fi
 
-WORKSPACE="${WORKSPACE:-${WORKSPACE_ROOT:-$PWD}}"
 
 # Preflight
 [ -n "$WORKSPACE" ] || { echo "ERROR: --workspace required" >&2; usage; exit 2; }