diff --git a/src/libsyntax/print/pp.rs b/src/libsyntax/print/pp.rs
index 4a92ad8ddb26d..32b66da4d96ce 100644
--- a/src/libsyntax/print/pp.rs
+++ b/src/libsyntax/print/pp.rs
@@ -159,9 +159,9 @@ pub struct PrintStackElem {
 const SIZE_INFINITY: isize = 0xffff;
 
 pub fn mk_printer<'a>(out: Box<io::Write+'a>, linewidth: usize) -> Printer<'a> {
-    // Yes 3, it makes the ring buffers big enough to never
+    // Yes 55, it makes the ring buffers big enough to never
     // fall behind.
-    let n: usize = 3 * linewidth;
+    let n: usize = 55 * linewidth;
     debug!("mk_printer {}", linewidth);
     let token = vec![Token::Eof; n];
     let size = vec![0; n];