diff --git a/src/include/lwip/apps/sntp_opts.h b/src/include/lwip/apps/sntp_opts.h
index fe671af6..caf97004 100644
--- a/src/include/lwip/apps/sntp_opts.h
+++ b/src/include/lwip/apps/sntp_opts.h
@@ -151,14 +151,14 @@
 
 /** SNTP receive timeout - in milliseconds
  * Also used as retry timeout - this shouldn't be too low.
- * Default is 3 seconds.
+ * Default is 15 seconds. Must not be beolw 15 seconds by specification (i.e. 15000)
  */
 #if !defined SNTP_RECV_TIMEOUT || defined __DOXYGEN__
-#define SNTP_RECV_TIMEOUT           3000
+#define SNTP_RECV_TIMEOUT           15000
 #endif
 
 /** SNTP update delay - in milliseconds
- * Default is 1 hour. Must not be beolw 15 seconds by specification (i.e. 15000)
+ * Default is 1 hour. Must not be beolw 60 seconds by specification (i.e. 60000)
  */
 #if !defined SNTP_UPDATE_DELAY || defined __DOXYGEN__
 #define SNTP_UPDATE_DELAY           3600000