diff --git a/src/modules/SX126x/SX126x.cpp b/src/modules/SX126x/SX126x.cpp
index 33d7fcb7..00102db5 100644
--- a/src/modules/SX126x/SX126x.cpp
+++ b/src/modules/SX126x/SX126x.cpp
@@ -371,12 +371,11 @@ int16_t SX126x::scanChannel() {
 }
 
 int16_t SX126x::sleep(bool retainConfig) {
-  uint8_t sleepMode = SX126X_SLEEP_START_WARM;
+  uint8_t sleepMode = SX126X_SLEEP_START_WARM | SX126X_SLEEP_RTC_OFF;
   if(!retainConfig) {
-    sleepMode = SX126X_SLEEP_START_COLD;
+    sleepMode = SX126X_SLEEP_START_COLD | SX126X_SLEEP_RTC_OFF;
   }
-  uint8_t data[] = {sleepMode | SX126X_SLEEP_RTC_OFF};
-  int16_t state = SPIwriteCommand(SX126X_CMD_SET_SLEEP, data, 1, false);
+  int16_t state = SPIwriteCommand(SX126X_CMD_SET_SLEEP, &sleepMode, 1, false);
 
   // wait for SX126x to safely enter sleep mode
   delayMicroseconds(500);