diff --git a/gsmmodem/modem.py b/gsmmodem/modem.py
index 1272190..398b272 100644
--- a/gsmmodem/modem.py
+++ b/gsmmodem/modem.py
@@ -922,7 +922,7 @@ def sendSms(self, destination, text, waitForDeliveryReport=False, deliveryTimeou
                 self.smsEncoding = 'GSM'
 
             # Encode text into PDUs
-            pdus = encodeSmsSubmitPdu(destination, text, reference=self._smsRef, sendFlash=sendFlash)
+            pdus = encodeSmsSubmitPdu(destination, text, reference=self._smsRef, requestStatusReport=self.requestDelivery, sendFlash=sendFlash)
 
             # Send SMS PDUs via AT commands
             for pdu in pdus: