diff --git a/src/modules/LR11x0/LR11x0.cpp b/src/modules/LR11x0/LR11x0.cpp
index 16f0726a..5c884082 100644
--- a/src/modules/LR11x0/LR11x0.cpp
+++ b/src/modules/LR11x0/LR11x0.cpp
@@ -1993,7 +1993,7 @@ int16_t LR11x0::eraseInfoPage(void) {
   return(this->SPIcommand(RADIOLIB_LR11X0_CMD_ERASE_INFO_PAGE, true, buff, sizeof(buff)));
 }
 
-int16_t LR11x0::writeInfoPage(uint16_t addr, uint32_t* data, size_t len) {
+int16_t LR11x0::writeInfoPage(uint16_t addr, const uint32_t* data, size_t len) {
   // check maximum size
   if(len > (RADIOLIB_LR11X0_SPI_MAX_READ_WRITE_LEN/sizeof(uint32_t))) {
     return(RADIOLIB_ERR_SPI_CMD_INVALID);
@@ -3042,7 +3042,7 @@ int16_t LR11x0::bootGetJoinEui(uint8_t* eui) {
   return(this->SPIcommand(RADIOLIB_LR11X0_CMD_BOOT_GET_JOIN_EUI, false, eui, RADIOLIB_LR11X0_EUI_LEN));
 }
 
-int16_t LR11x0::writeCommon(uint16_t cmd, uint32_t addrOffset, uint32_t* data, size_t len) {
+int16_t LR11x0::writeCommon(uint16_t cmd, uint32_t addrOffset, const uint32_t* data, size_t len) {
   // build buffers - later we need to ensure endians are correct, 
   // so there is probably no way to do this without copying buffers and iterating
   size_t buffLen = sizeof(uint32_t) + len*sizeof(uint32_t);
diff --git a/src/modules/LR11x0/LR11x0.h b/src/modules/LR11x0/LR11x0.h
index e7affc82..fbb83cf3 100644
--- a/src/modules/LR11x0/LR11x0.h
+++ b/src/modules/LR11x0/LR11x0.h
@@ -1292,7 +1292,7 @@ class LR11x0: public PhysicalLayer {
     int16_t setFs(void);
     int16_t getRandomNumber(uint32_t* rnd);
     int16_t eraseInfoPage(void);
-    int16_t writeInfoPage(uint16_t addr, uint32_t* data, size_t len);
+    int16_t writeInfoPage(uint16_t addr, const uint32_t* data, size_t len);
     int16_t readInfoPage(uint16_t addr, uint32_t* data, size_t len);
     int16_t getChipEui(uint8_t* eui);
     int16_t getSemtechJoinEui(uint8_t* eui);
@@ -1449,7 +1449,7 @@ class LR11x0: public PhysicalLayer {
 
     // common methods to avoid some copy-paste
     int16_t bleBeaconCommon(uint16_t cmd, uint8_t chan, uint8_t* payload, size_t len);
-    int16_t writeCommon(uint16_t cmd, uint32_t addrOffset, uint32_t* data, size_t len);
+    int16_t writeCommon(uint16_t cmd, uint32_t addrOffset, const uint32_t* data, size_t len);
     int16_t cryptoCommon(uint16_t cmd, uint8_t keyId, uint8_t* dataIn, size_t len, uint8_t* dataOut);
 };