1 files changed, 1 insertions, 1 deletions
diff --git a/src/sha2.c b/src/sha2.c
index d949537..3814562 100644
--- a/src/sha2.c
+++ b/src/sha2.c
@@ -83,7 +83,7 @@ uint32_t sha256_k[64] =
 
 /* SHA-256 functions */
 
-void sha256_transf(sha256_ctx *ctx, const unsigned char *message,
+static void sha256_transf(sha256_ctx *ctx, const unsigned char *message,
                    unsigned int block_nb)
 {
     uint32_t w[64];