diff --git a/base58.c b/base58.c
index c44ad87..8828dbe 100644
--- a/base58.c
+++ b/base58.c
@@ -119,8 +119,9 @@ int b58check(const void *bin, size_t binsz, const char *base58str, size_t b58sz)
 
 static const char b58digits_ordered[] = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz";
 
-bool b58enc(char *b58, size_t *b58sz, const uint8_t *bin, size_t binsz)
+bool b58enc(char *b58, size_t *b58sz, const void *data, size_t binsz)
 {
+	const uint8_t *bin = data;
 	int i, j, carry, high, zcount = 0;
 	size_t size;
 	uint8_t *buf;
diff --git a/base58.h b/base58.h
index 1655950..d2e1468 100644
--- a/base58.h
+++ b/base58.h
@@ -3,13 +3,12 @@
 
 #include <stdbool.h>
 #include <stddef.h>
-#include <stdint.h>
 
 extern bool (*b58_sha256_impl)(void *, const void *, size_t);
 
 extern bool b58tobin(void *bin, size_t binsz, const char *b58, size_t b58sz);
 extern int b58check(const void *bin, size_t binsz, const char *b58, size_t b58sz);
 
-extern bool b58enc(char *b58, size_t *b58sz, const uint8_t *bin, size_t binsz);
+extern bool b58enc(char *b58, size_t *b58sz, const void *bin, size_t binsz);
 
 #endif