diff --git a/disasm/src/formatter.rs b/disasm/src/formatter.rs
index 20fedc8..d8c0e4e 100644
--- a/disasm/src/formatter.rs
+++ b/disasm/src/formatter.rs
@@ -27,6 +27,7 @@ impl FormattedIns {
             Self::fmt_field(field, f)?;
             if writing_offset {
                 write!(f, ")")?;
+                writing_offset = false;
             }
             if i != fields.len() - 1 {
                 write!(f, ", ")?;
diff --git a/fuzz/src/main.rs b/fuzz/src/main.rs
index e4d1d84..be0840b 100644
--- a/fuzz/src/main.rs
+++ b/fuzz/src/main.rs
@@ -1,10 +1,11 @@
+use std::io::Write;
+use std::ops::Range;
 use std::sync::atomic::{AtomicU32, Ordering};
 use std::sync::Arc;
 use std::time::{Duration, Instant};
 
-use ppc750cl::formatter::SimpleFormatter;
+use ppc750cl::formatter::FormattedIns;
 use ppc750cl::Ins;
-use std::ops::Range;
 
 fn main() {
     let start = Instant::now();
@@ -62,7 +63,6 @@ impl MultiFuzzer {
             //      for most of the time.
             handle.join().expect("thread panicked");
         }
-        disasm(0xFFFF_FFFF);
     }
 }
 
@@ -81,11 +81,14 @@ impl Fuzzer {
     }
 
     fn dispatch(&self) -> std::thread::JoinHandle<()> {
+        let mut devnull = DevNull;
+
         let counter = Arc::clone(&self.counter);
         let range = self.range.clone();
         std::thread::spawn(move || {
             for x in range.clone() {
-                disasm(x);
+                let ins = Ins::new(x, 0x8000_0000);
+                writeln!(&mut devnull, "{}", FormattedIns(ins)).unwrap();
                 if x % (1 << 19) == 0 {
                     counter.store(x, Ordering::Relaxed);
                 }
@@ -95,13 +98,6 @@ impl Fuzzer {
     }
 }
 
-fn disasm(x: u32) {
-    let devnull = DevNull;
-    let mut formatter = SimpleFormatter { writer: devnull };
-    let ins = Ins::new(x, 0x8000_0000u32);
-    ins.write_string(&mut formatter).unwrap();
-}
-
 struct DevNull;
 
 impl std::io::Write for DevNull {
diff --git a/rand/src/main.rs b/rand/src/main.rs
index eefd5c1..99a75dd 100644
--- a/rand/src/main.rs
+++ b/rand/src/main.rs
@@ -1,26 +1,16 @@
 use rand_core::{RngCore, SeedableRng};
 use sfmt::SFMT;
 
-use ppc750cl::formatter::SimpleFormatter;
+use ppc750cl::formatter::FormattedIns;
 use ppc750cl::{Ins, Opcode};
-use std::io::{BufWriter, Write};
 
 fn main() {
     let mut rng = SFMT::seed_from_u64(42);
-    let stdout = std::io::stdout();
-    let stdout_lock = stdout.lock();
-    let stream = BufWriter::with_capacity(1_000_000, stdout_lock);
-    let mut formatter = SimpleFormatter { writer: stream };
     loop {
         let ins = Ins::new(rng.next_u32(), 0);
         if ins.op == Opcode::Illegal {
             continue;
         }
-        if ins.write_string(&mut formatter).is_err() {
-            return;
-        }
-        if formatter.writer.write_all("\n".as_ref()).is_err() {
-            return;
-        }
+        println!("{}", FormattedIns(ins));
     }
 }