1 files changed, 1 insertions, 1 deletions
diff --git a/src/test/run-pass/logging-only-prints-once.rs b/src/test/run-pass/logging-only-prints-once.rs
index 509afff3d13..787d0e98e2b 100644
--- a/src/test/run-pass/logging-only-prints-once.rs
+++ b/src/test/run-pass/logging-only-prints-once.rs
@@ -29,7 +29,7 @@ impl fmt::Show for Foo {
 pub fn main() {
     Thread::spawn(move|| {
         let mut f = Foo(Cell::new(0));
-        println!("{}", f);
+        println!("{:?}", f);
         let Foo(ref mut f) = f;
         assert!(f.get() == 1);
     }).join().ok().unwrap();