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-rw-r--r--tests/ui/resolve/extern-prelude-fail.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/tests/ui/resolve/extern-prelude-fail.rs b/tests/ui/resolve/extern-prelude-fail.rs
index c0716f1ebf5..7d0df03e57b 100644
--- a/tests/ui/resolve/extern-prelude-fail.rs
+++ b/tests/ui/resolve/extern-prelude-fail.rs
@@ -1,3 +1,4 @@
+//@ edition: 2015
 //@ compile-flags:--extern extern_prelude
 //@ aux-build:extern-prelude.rs