diff --git a/acme.sh b/acme.sh
index e2bc928..8f47f8c 100755
--- a/acme.sh
+++ b/acme.sh
@@ -1102,6 +1102,7 @@ _readKeyLengthFromCSR() {
   fi
 
   _outcsr="$(${ACME_OPENSSL_BIN:-openssl} req -noout -text -in "$_csrfile")"
+  _debug2 _outcsr "$_outcsr"
   if _contains "$_outcsr" "Public Key Algorithm: id-ecPublicKey"; then
     _debug "ECC CSR"
     echo "$_outcsr" | _egrep_o "^ *ASN1 OID:.*" | cut -d ':' -f 2 | tr -d ' '