diff --git a/ds/include/blue/ds/uuid.h b/ds/include/blue/ds/uuid.h
index 2f5924e..6973a79 100644
--- a/ds/include/blue/ds/uuid.h
+++ b/ds/include/blue/ds/uuid.h
@@ -36,10 +36,7 @@ BLUE_API b_uuid *b_uuid_create_from_uuid_bytes(const b_uuid_bytes *bytes);
 BLUE_API b_uuid *b_uuid_create_from_string(const b_string *string);
 BLUE_API b_uuid *b_uuid_create_from_cstr(const char *s);
 
-BLUE_API b_status b_uuid_to_string(const b_uuid *uuid, b_string *out);
 BLUE_API b_status b_uuid_to_cstr(const b_uuid *uuid, char out[B_UUID_STRING_MAX]);
-BLUE_API b_status b_uuid_to_stringstream(
-	const b_uuid *uuid, struct b_stringstream *out);
 BLUE_API void b_uuid_get_bytes(
 	const b_uuid *uuid, unsigned char bytes[B_UUID_NBYTES]);
 BLUE_API void b_uuid_get_uuid_bytes(const b_uuid *uuid, b_uuid_bytes *bytes);
diff --git a/ds/uuid.c b/ds/uuid.c
index a308a1c..1ff5726 100644
--- a/ds/uuid.c
+++ b/ds/uuid.c
@@ -191,24 +191,6 @@ b_uuid *b_uuid_create_from_string(const b_string *string)
 	return b_uuid_create_from_cstr(b_string_ptr(string));
 }
 
-b_status b_uuid_to_stringstream(const b_uuid *uuid, struct b_stringstream *out)
-{
-	char str[B_UUID_STRING_MAX];
-	b_uuid_to_cstr(uuid, str);
-	b_stringstream_add(out, str);
-
-	return B_SUCCESS;
-}
-
-b_status b_uuid_to_string(const b_uuid *uuid, b_string *out)
-{
-	char str[B_UUID_STRING_MAX];
-	b_uuid_to_cstr(uuid, str);
-	b_string_append_cstr(out, str);
-
-	return B_SUCCESS;
-}
-
 /*** VIRTUAL FUNCTIONS ********************************************************/
 
 static void uuid_init(b_object *obj, void *priv)
@@ -221,7 +203,7 @@ static void uuid_fini(b_object *obj, void *priv)
 	struct b_uuid_p *uuid = priv;
 }
 
-static void uuid_to_string(const b_object *uuid, struct b_stream *out)
+static void uuid_to_string(const b_object *uuid, b_stream *out)
 {
 	char str[B_UUID_STRING_MAX];
 	b_uuid_to_cstr(uuid, str);