diff --git a/src/ssl.c b/src/ssl.c
index 175e3460a..9dd044898 100644
--- a/src/ssl.c
+++ b/src/ssl.c
@@ -2387,7 +2387,7 @@ int wolfSSL_StartSecureRenegotiation(WOLFSSL* ssl, int resume)
 #endif
 
         if (!resume) {
-            XMEMSET(ssl->session.sessionID, 0, ID_LEN);
+            XMEMSET(ssl->session.sessionID, 0, sizeof(ssl->session.sessionID));
             ssl->session.sessionIDSz = 0;
         }