diff --git a/src/build/config/clang/BUILD.gn b/src/build/config/clang/BUILD.gn
index 5cc52c2697..1a663091eb 100644
--- a/src/build/config/clang/BUILD.gn
+++ b/src/build/config/clang/BUILD.gn
@@ -218,6 +218,8 @@ template("clang_lib") {
           _dir = "aarch64-unknown-linux-gnu"
         } else if (current_cpu == "loong64") {
           _dir = "loongarch64-unknown-linux-gnu"
+        } else if (current_cpu == "riscv64") {
+          _dir = "riscv64-unknown-linux-gnu"
         } else {
           assert(false)  # Unhandled cpu type
         }