diff --git a/source/config/exit_action.rs b/source/config/exit_action.rs
index 0ba08cd..016fd9a 100644
--- a/source/config/exit_action.rs
+++ b/source/config/exit_action.rs
@@ -4,7 +4,7 @@ use serde::{Deserialize, Serialize};
 
 /// Action to take on hook exit.
 #[derive(Debug, Deserialize, Serialize)]
-#[serde(rename_all = "lowercase")]
+#[serde(rename_all = "snake_case")]
 pub enum ExitAction {
   Continue,
   Stop,