diff --git a/src/test/run-pass/syntax-extension-fmt.rs b/src/test/run-pass/syntax-extension-fmt.rs
index b7076c8176d3..ebb09f96ba2c 100644
--- a/src/test/run-pass/syntax-extension-fmt.rs
+++ b/src/test/run-pass/syntax-extension-fmt.rs
@@ -10,4 +10,7 @@ fn test(str actual, str expected) {
 fn main() {
   test(#fmt("hello %d friends and %s things", 10, "formatted"),
     "hello 10 friends and formatted things");
+  test(#fmt("d: %d", 1), "d: 1");
+  test(#fmt("i: %i", 2), "i: 2");
+  test(#fmt("s: %s", "test"), "s: test");
 }