diff --git a/android/bazel_handler.go b/android/bazel_handler.go
index 81ca475..af405df 100644
--- a/android/bazel_handler.go
+++ b/android/bazel_handler.go
@@ -515,6 +515,6 @@
 		// build statement have later timestamps than the outputs.
 		rule.Restat()
 
-		rule.Build(fmt.Sprintf("bazel %s", index), buildStatement.Mnemonic)
+		rule.Build(fmt.Sprintf("bazel %d", index), buildStatement.Mnemonic)
 	}
 }