diff --git a/enemize/src/option_flags.rs b/enemize/src/option_flags.rs
index 259f160..a8d2fd9 100644
--- a/enemize/src/option_flags.rs
+++ b/enemize/src/option_flags.rs
@@ -366,7 +366,7 @@ impl TryFrom<u8> for BeeLevel {
 }
 
 #[derive(Debug, Deserialize, Serialize)]
-#[serde(rename_all = "PascalCase")]
+#[serde(default, rename_all = "PascalCase")]
 pub struct OptionFlags {
     pub randomize_enemies: bool,
     pub randomize_enemies_type: RandomizeEnemiesType,