diff --git a/src/ssl.c b/src/ssl.c
index 33092daf2..097e71c74 100644
--- a/src/ssl.c
+++ b/src/ssl.c
@@ -9040,7 +9040,7 @@ int wolfSSL_X509V3_EXT_print(WOLFSSL_BIO *out, WOLFSSL_X509_EXTENSION *ext,
     int nid;
     const int sz = CTC_NAME_SIZE*2;
     int rc = WOLFSSL_FAILURE;
-    char tmp[CTC_NAME_SIZE*2] = {0};
+    char tmp[CTC_NAME_SIZE*2 + 1] = {0};
     WOLFSSL_ENTER("wolfSSL_X509V3_EXT_print");
 
     if ((out == NULL) || (ext == NULL)) {