diff --git a/zk_prover/fuzz/fuzz_targets/util_fuzz.rs b/zk_prover/fuzz/fuzz_targets/util_fuzz.rs
deleted file mode 100644
index 36f716a..0000000
--- a/zk_prover/fuzz/fuzz_targets/util_fuzz.rs
+++ /dev/null
@@ -1,23 +0,0 @@
-#![no_main]
-
-use libfuzzer_sys::fuzz_target;
-use num_bigint::BigUint;
-use summa_solvency::merkle_sum_tree::utils::{big_intify_username, big_uint_to_fp, fp_to_big_uint};
-
-fuzz_target!(|data: &[u8]| {
-    if let Ok(username) = std::str::from_utf8(data) {
-        let big_uint_username = big_intify_username(username);
-
-        let bytes_back = big_uint_username.to_bytes_be();
-        assert_eq!(username.as_bytes(), bytes_back.as_slice());
-
-        let fp_username = big_uint_to_fp(&big_uint_username);
-        let big_uint_back = fp_to_big_uint(fp_username);
-
-        let fp_back = big_uint_to_fp(&big_uint_back);
-        assert_eq!(
-            fp_username, fp_back,
-            "Fp conversion cycle should be consistent"
-        );
-    }
-});