diff --git a/src/internal.c b/src/internal.c
index 25fb84be7..29d8602e0 100644
--- a/src/internal.c
+++ b/src/internal.c
@@ -5975,7 +5975,8 @@ int SendData(CYASSL* ssl, const void* data, int sz)
 {
     int sent = 0,  /* plainText size */
         sendSz,
-        ret;
+        ret,
+        dtlsExtra = 0;
 
     if (ssl->error == WANT_WRITE)
         ssl->error = 0;
@@ -6003,6 +6004,12 @@ int SendData(CYASSL* ssl, const void* data, int sz)
         }
     }
 
+#ifdef CYASSL_DTLS
+    if (ssl->options.dtls) {
+        dtlsExtra = DTLS_RECORD_EXTRA;
+    }
+#endif
+
     for (;;) {
 #ifdef HAVE_MAX_FRAGMENT
         int   len = min(sz - sent, min(ssl->max_fragment, OUTPUT_RECORD_SIZE));
@@ -6027,7 +6034,7 @@ int SendData(CYASSL* ssl, const void* data, int sz)
 
         /* check for available size */
         if ((ret = CheckAvailableSize(ssl, len + COMP_EXTRA +
-                                      MAX_MSG_EXTRA)) != 0)
+                                               dtlsExtra + MAX_MSG_EXTRA)) != 0)
             return ssl->error = ret;
 
         /* get ouput buffer */