1 files changed, 1 insertions, 0 deletions

diff --git a/crates/ra_hir_expand/src/name.rs b/crates/ra_hir_expand/src/name.rs
index b2e10f445..036cf7d1e 100644
--- a/crates/ra_hir_expand/src/name.rs
+++ b/crates/ra_hir_expand/src/name.rs
@@ -173,6 +173,7 @@ pub mod known {
         compile_error,
         line,
         stringify,
+        concat,
         format_args,
         format_args_nl,
         env,