diff --git a/src/build/config/clang/clang.gni b/src/build/config/clang/clang.gni
index e49005d8d2..43d2a041c3 100644
--- a/src/build/config/clang/clang.gni
+++ b/src/build/config/clang/clang.gni
@@ -41,7 +41,7 @@ android_supported_cpus = [
 ]
 clang_modules_platform_supported =
     # s390x should work, but IBM doesn't want it enabled for that cpu arch.
-    (is_linux && current_cpu != "s390x") ||
+    (is_linux && current_cpu != "s390x" && current_os != "openwrt") ||
     (is_android &&
      filter_include(android_supported_cpus, [ current_cpu ]) != []) ||
     is_apple || is_fuchsia || is_chromeos ||