diff --git a/cc/x86_64_device.go b/cc/x86_64_device.go
index ba190a0..b4f96b9 100644
--- a/cc/x86_64_device.go
+++ b/cc/x86_64_device.go
@@ -137,7 +137,7 @@
 
 	pctx.StaticVariable("x86_64GccVersion", x86_64GccVersion)
 
-	pctx.StaticVariable("x86_64GccRoot",
+	pctx.SourcePathVariable("x86_64GccRoot",
 		"prebuilts/gcc/${HostPrebuiltTag}/x86/x86_64-linux-android-${x86_64GccVersion}")
 
 	pctx.StaticVariable("x86_64GccTriple", "x86_64-linux-android")