diff --git a/tools/aconfig/src/main.rs b/tools/aconfig/src/main.rs
index c07bcf3..b3b6ac4 100644
--- a/tools/aconfig/src/main.rs
+++ b/tools/aconfig/src/main.rs
@@ -33,6 +33,9 @@
 mod commands;
 mod protos;
 
+#[cfg(test)]
+mod test;
+
 use crate::cache::Cache;
 use commands::{DumpFormat, Input, OutputFile, Source};