diff --git a/libraries/BLE/examples/Server/Server.ino b/libraries/BLE/examples/Server/Server.ino
index e86ed723267..4d70d4e897d 100644
--- a/libraries/BLE/examples/Server/Server.ino
+++ b/libraries/BLE/examples/Server/Server.ino
@@ -31,7 +31,7 @@ void setup() {
   pAdvertising->addServiceUUID(SERVICE_UUID);
   pAdvertising->setScanResponse(true);
   pAdvertising->setMinPreferred(0x06);  // functions that help with iPhone connections issue
-  pAdvertising->setMinPreferred(0x12);
+  pAdvertising->setMaxPreferred(0x12);
   BLEDevice::startAdvertising();
   Serial.println("Characteristic defined! Now you can read it in your phone!");
 }
diff --git a/libraries/BLE/examples/Server_secure_authorization/Server_secure_authorization.ino b/libraries/BLE/examples/Server_secure_authorization/Server_secure_authorization.ino
index b1ab9cd5931..2056e793393 100644
--- a/libraries/BLE/examples/Server_secure_authorization/Server_secure_authorization.ino
+++ b/libraries/BLE/examples/Server_secure_authorization/Server_secure_authorization.ino
@@ -140,7 +140,7 @@ void setup() {
   pAdvertising->addServiceUUID(SERVICE_UUID);
   pAdvertising->setScanResponse(true);
   pAdvertising->setMinPreferred(0x06);  // helps with iPhone connections
-  pAdvertising->setMinPreferred(0x12);
+  pAdvertising->setMaxPreferred(0x12);
 
   BLEDevice::startAdvertising();
 
diff --git a/libraries/BLE/examples/Server_secure_static_passkey/Server_secure_static_passkey.ino b/libraries/BLE/examples/Server_secure_static_passkey/Server_secure_static_passkey.ino
index fef8c0bd15f..3ccba21bf71 100644
--- a/libraries/BLE/examples/Server_secure_static_passkey/Server_secure_static_passkey.ino
+++ b/libraries/BLE/examples/Server_secure_static_passkey/Server_secure_static_passkey.ino
@@ -185,7 +185,7 @@ void setup() {
   pAdvertising->addServiceUUID(SERVICE_UUID);
   pAdvertising->setScanResponse(true);
   pAdvertising->setMinPreferred(0x06);  // functions that help with iPhone connections issue
-  pAdvertising->setMinPreferred(0x12);
+  pAdvertising->setMaxPreferred(0x12);
   BLEDevice::startAdvertising();
   Serial.println("Characteristic defined! Now you can read it in your phone!");
 }