diff --git a/crates/algorithms/algorithms-c/src/crc/crc32.c b/crates/algorithms/algorithms-c/src/crc/crc32.c
index 9deb710..cfcd686 100755
--- a/crates/algorithms/algorithms-c/src/crc/crc32.c
+++ b/crates/algorithms/algorithms-c/src/crc/crc32.c
@@ -52,7 +52,7 @@ Crc32 crc32_new() {
   crc32.buf = 0;
   return crc32;
 }
-void crc32_process(const char *data, size_t len, Crc32 *crc32) {
+void crc32_process(const uint8_t *data, size_t len, Crc32 *crc32) {
 #define chksum crc32->buf
   chksum = CRC32_INIT;
   for (uint32_t i = 0; i < len; i++) {
@@ -63,7 +63,7 @@ void crc32_process(const char *data, size_t len, Crc32 *crc32) {
   return;
 }
 
-ChecksumCrc32 crc32_checksum(const void *data, uint32_t len) {
+ChecksumCrc32 crc32_checksum(const uint8_t *data, uint32_t len) {
   Crc32 crc32 = crc32_new();
   crc32_process(data, len, &crc32);
   return crc32.buf;
diff --git a/crates/algorithms/algorithms-c/src/crc/crc32.h b/crates/algorithms/algorithms-c/src/crc/crc32.h
index e3dc719..ecc60ae 100755
--- a/crates/algorithms/algorithms-c/src/crc/crc32.h
+++ b/crates/algorithms/algorithms-c/src/crc/crc32.h
@@ -16,8 +16,8 @@ typedef struct Crc32 {
 } Crc32;
 
 Crc32 crc32_new();
-void crc32_process(const char *data, size_t len, Crc32 *crc32);
+void crc32_process(const uint8_t *data, size_t len, Crc32 *crc32);
 
-ChecksumCrc32 crc32_checksum(const void *data, uint32_t len);
+ChecksumCrc32 crc32_checksum(const uint8_t *data, uint32_t len);
 
 #endif // CRC32_H