diff --git a/techtree-manager/src/main.rs b/techtree-manager/src/main.rs
index bfb830a..9d6caff 100644
--- a/techtree-manager/src/main.rs
+++ b/techtree-manager/src/main.rs
@@ -30,7 +30,9 @@ async fn run() -> anyhow::Result<()> {
         log::warn!("Fake tree!");
         event_meta::fake()
     } else {
-        event_meta::get_issue_event_meta_from_env().context("Failed reading issue event data")?
+        event_meta::get_issue_event_meta_from_env()
+            .context("Maybe you want to run with TECHTREE_FAKE=1?")
+            .context("Failed reading issue event data")?
     };
 
     log::info!(