diff --git a/main/bucket.c b/main/bucket.c
index fd5b091eafcbbf1d3dae74df756aaa2f9db23c65..3ad47652827c63d8c80830901de56237137ee8ba 100644
--- a/main/bucket.c
+++ b/main/bucket.c
@@ -901,7 +901,7 @@ static int timeval_str2struct(const struct aco_option *opt, struct ast_variable
 static int timeval_struct2str(const void *obj, const intptr_t *args, char **buf)
 {
 	struct timeval *field = (struct timeval *)(obj + args[0]);
-	return (ast_asprintf(buf, "%lu.%06lu", field->tv_sec, field->tv_usec) < 0) ? -1 : 0;
+	return (ast_asprintf(buf, "%lu.%06lu", field->tv_sec, (unsigned long)field->tv_usec) < 0) ? -1 : 0;
 }
 
 /*! \brief Initialize bucket support */