diff --git a/cc/config/x86_linux_bionic_host.go b/cc/config/x86_linux_bionic_host.go
index 8a12523..5fb88e6 100644
--- a/cc/config/x86_linux_bionic_host.go
+++ b/cc/config/x86_linux_bionic_host.go
@@ -139,6 +139,10 @@
 	return true
 }
 
+func (toolchainLinuxBionic) LibclangRuntimeLibraryArch() string {
+	return "x86_64"
+}
+
 var toolchainLinuxBionicSingleton Toolchain = &toolchainLinuxBionic{}
 
 func linuxBionicToolchainFactory(arch android.Arch) Toolchain {