diff --git a/yama/src/bin/yama.rs b/yama/src/bin/yama.rs
index 3d6b42c..f629da4 100644
--- a/yama/src/bin/yama.rs
+++ b/yama/src/bin/yama.rs
@@ -162,6 +162,7 @@ fn main() -> anyhow::Result<()> {
 
             if error_count > 0 {
                 eprintln!("THERE ARE {} ERRORS.", error_count);
+                std::process::exit(1);
             }
         }
         PileCommand::Init {} => {