diff --git a/compiler/src/dmd/backend/debugprint.d b/compiler/src/dmd/backend/debugprint.d
index 1a7334ce5592..365bc062e707 100644
--- a/compiler/src/dmd/backend/debugprint.d
+++ b/compiler/src/dmd/backend/debugprint.d
@@ -331,7 +331,7 @@ void WRdefnod()
 @trusted
 const(char)* fl_str(FL fl)
 {
-    __gshared const char*[FLMAX] fls =
+    immutable char*[FLMAX] fls =
     [   "FLunde",
         "FLconst",
         "FLoper",