diff --git a/library/pk_wrap.c b/library/pk_wrap.c
index 332696d..c7f879a 100644
--- a/library/pk_wrap.c
+++ b/library/pk_wrap.c
@@ -563,7 +563,7 @@
     if( curve == 0 )
         return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
 
-    /* mbedlts_pk_write_pubkey_der() expects a full PK context,
+    /* mbedtls_pk_write_pubkey() expects a full PK context;
      * re-construct one to make it happy */
     key.pk_info = &pk_info;
     key.pk_ctx = ctx;