diff --git a/library/pk_wrap.c b/library/pk_wrap.c
index 4b834ea..f874a7d 100644
--- a/library/pk_wrap.c
+++ b/library/pk_wrap.c
@@ -190,7 +190,7 @@
     if( sig_len < rsa_len )
         return( MBEDTLS_ERR_RSA_VERIFY_FAILED );
 
-    /* mbedtls_pk_write_pubkey() expects a full PK context;
+    /* mbedtls_pk_write_pubkey_der() expects a full PK context;
      * re-construct one to make it happy */
     key.pk_info = &pk_info;
     key.pk_ctx = ctx;