diff --git a/src/tint/BUILD.gn b/src/tint/BUILD.gn
index 9e39630752..625a7ca3d7 100644
--- a/src/tint/BUILD.gn
+++ b/src/tint/BUILD.gn
@@ -482,7 +482,6 @@ libtint_source_set("libtint_core_all_src") {
     "transform/builtin_polyfill.h",
     "transform/calculate_array_length.cc",
     "transform/calculate_array_length.h",
-    "transform/calculate_array_length.h",
     "transform/canonicalize_entry_point_io.cc",
     "transform/canonicalize_entry_point_io.h",
     "transform/clamp_frag_depth.cc",