diff --git a/src/main/java/org/jruby/ext/openssl/X509CRL.java b/src/main/java/org/jruby/ext/openssl/X509CRL.java
index df9e1453..b5baa2b8 100644
--- a/src/main/java/org/jruby/ext/openssl/X509CRL.java
+++ b/src/main/java/org/jruby/ext/openssl/X509CRL.java
@@ -304,7 +304,7 @@ public IRubyObject initialize_copy(final IRubyObject obj) {
     public IRubyObject to_pem(final ThreadContext context) {
         StringWriter writer = new StringWriter();
         try {
-            PEMInputOutput.writeX509CRL(writer, crl);
+            PEMInputOutput.writeX509CRL(writer, getCRL());
             return RubyString.newString(context.runtime, writer.getBuffer());
         }
         catch (IOException e) {