diff --git a/src/test/ui/cross-crate-macro-backtrace/main.stderr b/src/test/ui/cross-crate-macro-backtrace/main.stderr
index 84db85ac092..4dad6d60b40 100644
--- a/src/test/ui/cross-crate-macro-backtrace/main.stderr
+++ b/src/test/ui/cross-crate-macro-backtrace/main.stderr
@@ -1,4 +1,4 @@
-error: invalid reference to argument `0` (no arguments given)
+error: 1 positional argument in format string, but no arguments were given
   --> $DIR/main.rs:16:5
    |
 16 |     myprintln!("{}"); //~ ERROR in this macro
diff --git a/src/test/ui/macros/macro-backtrace-println.stderr b/src/test/ui/macros/macro-backtrace-println.stderr
index f21253bb67f..3e782294484 100644
--- a/src/test/ui/macros/macro-backtrace-println.stderr
+++ b/src/test/ui/macros/macro-backtrace-println.stderr
@@ -1,4 +1,4 @@
-error: invalid reference to argument `0` (no arguments given)
+error: 1 positional argument in format string, but no arguments were given
   --> $DIR/macro-backtrace-println.rs:24:30
    |
 24 |     ($fmt:expr) => (myprint!(concat!($fmt, "/n")));