diff --git a/README.md b/README.md
index 3ca226c08..fcbeb7c17 100644
--- a/README.md
+++ b/README.md
@@ -92,11 +92,11 @@ auto x = model.add_var(0, 10, Integer, "x");
 auto y = model.add_var(0, 5, Integer, "y");
 
 model.set_obj_expr(-x - 7 * y);
-model.add_ctr(-3 * x + 2 * y <= 12);
-model.add_ctr(x + 2 * y <= 20);
-auto follower_objective = model.add_ctr(y == 0);
-auto follower_c1 = model.add_ctr(2 * x - y <= 7);
-auto follower_c2 = model.add_ctr(-2 * x + 4 * y <= 16);
+auto c1 = model.add_ctr(-3 * x + 2 * y <= 12);
+auto c2 = model.add_ctr(x + 2 * y <= 20);
+auto c3 = model.add_ctr(y == 0);
+auto c4 = model.add_ctr(2 * x - y <= 7);
+auto c5 = model.add_ctr(-2 * x + 4 * y <= 16);
 
 // Annotate follower variables
 // * If not annotated, the default value is MasterId, i.e., leader variables and constraints
@@ -105,8 +105,8 @@ Annotation<Var> follower_variables(env, "follower_variable", MasterId);
 Annotation<Ctr> follower_constraints(env, "follower_constraints", MasterId);
 
 y.set(follower_variables, 0); // "y" is a lower level variable
-follower_c1.set(follower_constraints, 0); // "follower_c1" is a lower level constraint
-follower_c2.set(follower_constraints, 0); // "follower_c2" is a lower level constraint
+c4.set(follower_constraints, 0); // "c4" is a lower level constraint
+c5.set(follower_constraints, 0); // "c5" is a lower level constraint
 
 // Use coin-or/MibS as external solver
 model.use(BiLevel::MibS(follower_variables,