diff --git a/cc/arm64_device.go b/cc/arm64_device.go
index 4b1598f..ac0d94a 100644
--- a/cc/arm64_device.go
+++ b/cc/arm64_device.go
@@ -128,7 +128,7 @@
 	return "${arm64Ldflags}"
 }
 
-func arm64ToolchainFactory(archVariant string, cpuVariant string) toolchain {
+func arm64ToolchainFactory(archVariant string, cpuVariant string) Toolchain {
 	return toolchainArm64Singleton
 }