diff --git a/src/protocol/tests/utils.rs b/src/protocol/tests/utils.rs
index 7dff07dacf06403751b5379528373bca3cd94c92..735cbdc11c4a0e1c5eeb1c13f21d34f281ea3d49 100644
--- a/src/protocol/tests/utils.rs
+++ b/src/protocol/tests/utils.rs
@@ -59,7 +59,7 @@ impl Tester {
     }
 
     pub(crate) fn compile(self) -> AstTesterResult {
-        let mut parser = Parser::new();
+        let mut parser = Parser::new().unwrap();
         for source in self.sources.into_iter() {
             let source = source.into_bytes();
             let input_source = InputSource::new(String::from(""), source);