diff --git a/examples/SX1231/SX1231_Transmit/SX1231_Transmit.ino b/examples/SX1231/SX1231_Transmit/SX1231_Transmit.ino
index f109ba09..6fbc5f06 100644
--- a/examples/SX1231/SX1231_Transmit/SX1231_Transmit.ino
+++ b/examples/SX1231/SX1231_Transmit/SX1231_Transmit.ino
@@ -49,11 +49,11 @@ void loop() {
 
   if (state == ERR_NONE) {
     // the packet was successfully transmitted
-    Serial.println(" success!");
+    Serial.println(F(" success!"));
 
   } else if (state == ERR_PACKET_TOO_LONG) {
     // the supplied packet was longer than 256 bytes
-    Serial.println(" too long!");
+    Serial.println(F(" too long!"));
 
   }