diff --git a/.claude/scripts/check-messages.sh b/.claude/scripts/check-messages.sh
index 05a3bff..3fa6f98 100644
--- a/.claude/scripts/check-messages.sh
+++ b/.claude/scripts/check-messages.sh
@@ -1,6 +1,8 @@
 #!/usr/bin/env bash
 # UserPromptSubmit hook — injects unread coord messages and (in dev mode) active locks.
-SESSION="$(hostname)/claude-main"
+# Strip .local suffix if present (macOS convention)
+HOSTNAME_RAW="$(hostname)"
+SESSION="${HOSTNAME_RAW%.local}/claude-main"
 API="http://172.16.3.30:8001"
 SCRIPT_DIR="$(cd "$(dirname "$0")/.." && pwd)"
 MODE_FILE="${SCRIPT_DIR}/current-mode"