diff --git a/cf-ddns.sh b/cf-ddns.sh
index e7cccaa..e4a0000 100644
--- a/cf-ddns.sh
+++ b/cf-ddns.sh
@@ -17,10 +17,10 @@ source "$ENV_FILE"
 : "${CF_TTL:=120}"
 
 # --- Derive zone/record from system hostname ---
-CF_RECORD_NAME="$(hostname -f 2>/dev/null || true)"
+CF_RECORD_NAME="$(hostname -s 2>/dev/null || true)"
 CF_ZONE_NAME="$(hostname -d 2>/dev/null || true)"
 
-[[ -n "$CF_RECORD_NAME" ]] || fail "hostname -f returned empty"
+[[ -n "$CF_RECORD_NAME" ]] || fail "hostname -s returned empty"
 [[ -n "$CF_ZONE_NAME"  ]] || fail "hostname -d returned empty (set a DNS/search domain)"
 
 if [[ "$CF_RECORD_NAME" != *".${CF_ZONE_NAME}" ]]; then