diff --git a/src/verifier.rs b/src/verifier.rs
index ac247a7..287798d 100644
--- a/src/verifier.rs
+++ b/src/verifier.rs
@@ -53,8 +53,7 @@ impl Verifier {
         inputs[0] = 1;
         sum += new_equation.evaluate_over_f(inputs.to_vec(), self.f);
         sum = sum % self.f;
-        inputs[0] = value;
-        if sum != previous_equation.evaluate_over_f(inputs.try_into().unwrap(), self.f) {
+        if sum != previous_equation.evaluate_over_f([value].try_into().unwrap(), self.f) {
             println!("sum: {}", sum);
             println!(
                 "previous: {}",
@@ -76,10 +75,4 @@ impl Verifier {
             panic!("sum is not equal to the sum of the equation");
         }
     }
-    pub fn choose_random_input_and_set_value(&self, lenght: usize) -> (i128, i128) {
-        let mut rng = rand::thread_rng();
-        let random_index = rng.gen_range(0..lenght);
-        let random_value = rng.gen_range(0..self.f);
-        (random_index as i128, random_value)
-    }
 }
diff --git a/tests/proving_process_test.rs b/tests/proving_process_test.rs
index d20e5a6..86d3e14 100644
--- a/tests/proving_process_test.rs
+++ b/tests/proving_process_test.rs
@@ -11,3 +11,9 @@ fn test_verify_process2() {
     let equation = sum_check::equation::Equation::from_string("x1+x2+x3");
     sum_check::proving_process_interactive::run_proving_process(equation, 100);
 }
+
+#[test]
+fn test_verify_process3() {
+    let equation = sum_check::equation::Equation::from_string("2*x1^3+x1*x2+x2*x3");
+    sum_check::proving_process_interactive::run_proving_process(equation, 1000);
+}