diff --git a/examples/client/client.c b/examples/client/client.c
index 932aed198..ef651fbe7 100644
--- a/examples/client/client.c
+++ b/examples/client/client.c
@@ -52,6 +52,10 @@
 
 #include "examples/client/client.h"
 
+/* Note on using port 0: the client and server standalone examples don't
+ * utilize the port 0 port sharing; that is used by the testsuite which uses
+ * this code and sets up the correct port numbers when the internal thread,
+ * using the server code, uses port 0. */
 
 #ifdef WOLFSSL_CALLBACKS
     int handShakeCB(HandShakeInfo*);
diff --git a/examples/server/server.c b/examples/server/server.c
index 3e10c8f81..a97bcc93b 100644
--- a/examples/server/server.c
+++ b/examples/server/server.c
@@ -54,6 +54,10 @@
 
 #include "examples/server/server.h"
 
+/* Note on using port 0: the client and server standalone examples don't
+ * utilize the port 0 port sharing; that is used by the testsuite which uses
+ * this code and sets up the correct port numbers when the internal thread,
+ * using the server code, uses port 0. */
 
 #ifdef CYASSL_CALLBACKS
     int srvHandShakeCB(HandShakeInfo*);