diff --git a/np_sdk/inc/npapi.h b/np_sdk/inc/npapi.h
index 0a2d5650646e..de28d05564ac 100644
--- a/np_sdk/inc/npapi.h
+++ b/np_sdk/inc/npapi.h
@@ -738,13 +738,6 @@ enum NPEventType {
 #define NPRES_NETWORK_ERR  (NPRES_BASE + 1)
 #define NPRES_USER_BREAK   (NPRES_BASE + 2)
 
-/*
- * Don't use these obsolete error codes any more.
- */
-#define NP_NOERR  NP_NOERR_is_obsolete_use_NPERR_NO_ERROR
-#define NP_EINVAL NP_EINVAL_is_obsolete_use_NPERR_GENERIC_ERROR
-#define NP_EABORT NP_EABORT_is_obsolete_use_NPRES_USER_BREAK
-
 /*
  * Version feature information
  */