diff --git a/acme.sh b/acme.sh
index 436c3ef9..33c0ed4a 100755
--- a/acme.sh
+++ b/acme.sh
@@ -406,7 +406,7 @@ _getfile() {
 #Usage: multiline
 _base64() {
   if [ "$1" ]; then
-    _debug3 "base64 multiline:$1"
+    _debug3 "base64 multiline:'$1'"
     $OPENSSL_BIN base64 -e
   else
     _debug3 "base64 single line."
@@ -933,7 +933,7 @@ _calcjwk() {
 
     modulus=$($OPENSSL_BIN rsa -in "$keyfile" -modulus -noout | cut -d '=' -f 2)
     _debug3 modulus "$modulus"
-    n="$(printf "%s" "$modulus" | _h2b | _base64 | _urlencode)"
+    n="$(printf "%s" "$modulus" | _h2b | _base64| _urlencode)"
     _debug3 n "$n"
 
     jwk='{"e": "'$e'", "kty": "RSA", "n": "'$n'"}'