diff --git a/ui/build/ninja.go b/ui/build/ninja.go
index 8ca62d3..4e3e544 100644
--- a/ui/build/ninja.go
+++ b/ui/build/ninja.go
@@ -57,7 +57,7 @@
 		"--frontend_file", fifo,
 	}
 	if config.useN2 {
-		executable = config.PrebuiltBuildTool("n2")
+		executable = config.N2Bin()
 		args = []string{
 			"-d", "trace",
 			// TODO: implement these features, or remove them.