1 files changed, 8 insertions, 2 deletions
diff --git a/src/libstd/macros.rs b/src/libstd/macros.rs
index 75f038407c1..a4a6ed73c61 100644
--- a/src/libstd/macros.rs
+++ b/src/libstd/macros.rs
@@ -155,8 +155,14 @@ macro_rules! print {
 #[stable(feature = "rust1", since = "1.0.0")]
 macro_rules! println {
     () => (print!("\n"));
-    ($fmt:expr) => (print!(concat!($fmt, "\n")));
-    ($fmt:expr, $($arg:tt)*) => (print!(concat!($fmt, "\n"), $($arg)*));
+    ($fmt:expr) => ({
+        print!($fmt);
+        print!("\n");
+    });
+    ($fmt:expr, $($arg:tt)*) => ({
+        print!($fmt, $($arg)*);
+        print!("\n");
+    });
 }
 
 /// Macro for printing to the standard error.