diff --git a/src/mixin.rs b/src/mixin.rs
index 33de329..f1ee5e6 100644
--- a/src/mixin.rs
+++ b/src/mixin.rs
@@ -43,7 +43,7 @@ impl Mixin {
                 kind: TokenKind::Symbol(Symbol::OpenCurlyBrace),
                 ..
             }) => FuncArgs::new(),
-            _ => return Err("expected \"{\"".into()),
+            _ => return Err("expected \"{\".".into()),
         };
 
         devour_whitespace(toks);