diff --git a/d6/dcd/md__c_o_n_t_r_i_b_u_t_i_n_g.html b/d6/dcd/md__c_o_n_t_r_i_b_u_t_i_n_g.html
index 171d1d772..920155ea5 100644
--- a/d6/dcd/md__c_o_n_t_r_i_b_u_t_i_n_g.html
+++ b/d6/dcd/md__c_o_n_t_r_i_b_u_t_i_n_g.html
@@ -222,6 +222,7 @@ static void tests() {
  */
 int main() {
     tests(); // run self-test implementations
+    return 0;
 }
 @endicode