diff --git a/cc/ndk_sysroot.go b/cc/ndk_sysroot.go
index 2e4e395..5b4cfbe 100644
--- a/cc/ndk_sysroot.go
+++ b/cc/ndk_sysroot.go
@@ -113,10 +113,11 @@
 
 	combinedLicense := getNdkInstallBase(ctx).Join(ctx, "NOTICE")
 	ctx.Build(pctx, blueprint.BuildParams{
-		Rule:     android.Cat,
-		Outputs:  []string{combinedLicense.String()},
-		Inputs:   licensePaths,
-		Optional: true,
+		Rule:        android.Cat,
+		Description: "combine licenses",
+		Outputs:     []string{combinedLicense.String()},
+		Inputs:      licensePaths,
+		Optional:    true,
 	})
 
 	depPaths := append(installPaths, combinedLicense.String())