1 files changed, 3 insertions, 1 deletions

diff --git a/firmware/common/crc32.c b/firmware/common/crc32.c
index 18ee6ac710..21fefac07f 100644
--- a/firmware/common/crc32.c
+++ b/firmware/common/crc32.c
@@ -21,8 +21,10 @@
 
 /* Tool function to calculate a CRC32 across some buffer */
 /* third argument is either 0xFFFFFFFF to start or value from last piece */
-unsigned crc_32(unsigned char* buf, unsigned len, unsigned crc32)
+unsigned crc_32(const void *src, unsigned len, unsigned crc32)
 {
+    const unsigned char *buf = (const unsigned char *)src;
+    
     /* CCITT standard polynomial 0x04C11DB7 */
     static const unsigned crc32_lookup[16] =
     {   /* lookup table for 4 bits at a time is affordable */