diff --git a/src/crypt.c b/src/crypt.c
index 3231ad9..1f12be8 100644
--- a/src/crypt.c
+++ b/src/crypt.c
@@ -128,7 +128,7 @@ int crypt_hello_verify(const unsigned char *const hello, crypt_key_t *const remo
     return 0;
 }
 
-const unsigned char *crypt_hello_get_nonce(const unsigned char *const own_hello, const unsigned char *const remote_hello, bool is_client) {
+unsigned char *crypt_hello_get_nonce(const unsigned char *const own_hello, const unsigned char *const remote_hello, bool is_client) {
     unsigned char *nonce = (unsigned char *)malloc(CRYPT_NONCE_LEN * sizeof(unsigned char));
     if (nonce == NULL)
         return NULL;
diff --git a/src/crypt.h b/src/crypt.h
index 6faeb1e..ac06b25 100644
--- a/src/crypt.h
+++ b/src/crypt.h
@@ -61,7 +61,7 @@ unsigned char *crypt_hello(const crypt_key_t *const own);
 int crypt_hello_verify(const unsigned char *const hello, crypt_key_t *const remote);
 // Combines own and remote halves of a nonce depending in a connection direction and returns it.
 // It will be of CRYPT_NONCE_LEN length.
-const unsigned char *crypt_hello_get_nonce(const unsigned char *const own_hello, const unsigned char *const remote_hello, bool is_client);
+unsigned char *crypt_hello_get_nonce(const unsigned char *const own_hello, const unsigned char *const remote_hello, bool is_client);
 
 // Stores symmetric keys used for a data encryption in both directions
 // and a remote public key.