diff --git a/src/front/glsl/mod.rs b/src/front/glsl/mod.rs
index 41e6967db1..1db77c271a 100644
--- a/src/front/glsl/mod.rs
+++ b/src/front/glsl/mod.rs
@@ -19,6 +19,7 @@ mod token;
 mod types;
 mod variables;
 
+#[derive(Default)]
 pub struct Options {
     pub entry_points: FastHashMap<String, ShaderStage>,
     pub defines: FastHashMap<String, String>,