diff --git a/plonky2/src/plonk/circuit_data.rs b/plonky2/src/plonk/circuit_data.rs
index a113fcdb..745e844e 100644
--- a/plonky2/src/plonk/circuit_data.rs
+++ b/plonky2/src/plonk/circuit_data.rs
@@ -96,9 +96,9 @@ impl CircuitConfig {
 
 /// Circuit data required by the prover or the verifier.
 pub struct CircuitData<F: RichField + Extendable<D>, C: GenericConfig<D, F = F>, const D: usize> {
-    pub prover_only: ProverOnlyCircuitData<F, C, D>,
-    pub verifier_only: VerifierOnlyCircuitData<C, D>,
-    pub common: CommonCircuitData<F, C, D>,
+    pub(crate) prover_only: ProverOnlyCircuitData<F, C, D>,
+    pub(crate) verifier_only: VerifierOnlyCircuitData<C, D>,
+    pub(crate) common: CommonCircuitData<F, C, D>,
 }
 
 impl<F: RichField + Extendable<D>, C: GenericConfig<D, F = F>, const D: usize>
diff --git a/starky/src/fibonacci_stark.rs b/starky/src/fibonacci_stark.rs
index eff373ac..8e407968 100644
--- a/starky/src/fibonacci_stark.rs
+++ b/starky/src/fibonacci_stark.rs
@@ -108,7 +108,6 @@ impl<F: RichField + Extendable<D>, const D: usize> Stark<F, D> for FibonacciStar
 #[cfg(test)]
 mod tests {
     use anyhow::Result;
-    use log::Level;
     use plonky2::field::extension_field::Extendable;
     use plonky2::field::field_types::Field;
     use plonky2::hash::hash_types::RichField;
@@ -226,14 +225,7 @@ mod tests {
         }
 
         let data = builder.build::<C>();
-
-        let mut timing = TimingTree::new("prove", Level::Debug);
-        let proof =
-            plonky2::plonk::prover::prove(&data.prover_only, &data.common, pw, &mut timing)?;
-        if print_timing {
-            timing.print();
-        }
-
+        let proof = data.prove(pw)?;
         data.verify(proof)
     }