1 files changed, 1 insertions, 1 deletions
diff --git a/src/drivers/SpiMaster.h b/src/drivers/SpiMaster.h
index 88b37a3..cd3193e 100644
--- a/src/drivers/SpiMaster.h
+++ b/src/drivers/SpiMaster.h
@@ -37,7 +37,7 @@ namespace Pinetime {
         bool Write(uint8_t pinCsn, const uint8_t* data, size_t size);
         bool Read(uint8_t pinCsn, uint8_t* cmd, size_t cmdSize, uint8_t *data, size_t dataSize);
 
-        bool WriteCmdAndBuffer(uint8_t pinCsn, uint8_t* cmd, size_t cmdSize, uint8_t *data, size_t dataSize);
+        bool WriteCmdAndBuffer(uint8_t pinCsn, const uint8_t* cmd, size_t cmdSize, const uint8_t *data, size_t dataSize);
 
         void OnStartedEvent();
         void OnEndEvent();