diff --git a/prover/src/io.rs b/prover/src/io.rs
index c75402311..01d45925e 100644
--- a/prover/src/io.rs
+++ b/prover/src/io.rs
@@ -157,7 +157,7 @@ pub fn serialize_verify_circuit_final_pair(pair: &(G1Affine, G1Affine, Vec<Fr>))
 
 pub fn write_snark(file_path: &str, snark: &Snark) {
     let mut fd = std::fs::File::create(file_path).unwrap();
-    serde_json::to_writer_pretty(&mut fd, snark).unwrap()
+    serde_json::to_writer(&mut fd, snark).unwrap()
 }
 
 pub fn load_snark(file_path: &str) -> anyhow::Result<Option<Snark>> {
diff --git a/prover/src/proof.rs b/prover/src/proof.rs
index e7aee459a..8212c8118 100644
--- a/prover/src/proof.rs
+++ b/prover/src/proof.rs
@@ -118,7 +118,7 @@ impl Proof {
 pub fn dump_as_json<P: serde::Serialize>(dir: &str, filename: &str, proof: &P) -> Result<()> {
     // Write full proof as json.
     let mut fd = File::create(dump_proof_path(dir, filename))?;
-    serde_json::to_writer_pretty(&mut fd, proof)?;
+    serde_json::to_writer(&mut fd, proof)?;
 
     Ok(())
 }