diff --git a/library/pkparse.c b/library/pkparse.c
index b2d3bb0..22dab3a 100644
--- a/library/pkparse.c
+++ b/library/pkparse.c
@@ -1343,6 +1343,7 @@
      * error
      */
 #if defined(MBEDTLS_PKCS12_C) || defined(MBEDTLS_PKCS5_C)
+    if( pwdlen != 0 )
     {
         unsigned char *key_copy;