diff --git a/library/x509_crl.c b/library/x509_crl.c
index 7b2b473..5b0adef 100644
--- a/library/x509_crl.c
+++ b/library/x509_crl.c
@@ -530,7 +530,7 @@
 
             mbedtls_pem_free( &pem );
         }
-        else if( ret != MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT )
+        else if( is_pem )
         {
             mbedtls_pem_free( &pem );
             return( ret );