diff --git a/src/ast.rs b/src/ast.rs
index 5e71db1e..93e049a2 100644
--- a/src/ast.rs
+++ b/src/ast.rs
@@ -1154,8 +1154,8 @@ mod tests {
         assert_eq!(size_of::<crate::ast::Stmt>(), 32);
         assert_eq!(size_of::<Option<crate::ast::Stmt>>(), 32);
         assert_eq!(size_of::<crate::Scope>(), 72);
-        assert_eq!(size_of::<crate::LexError>(), 32);
+        assert_eq!(size_of::<crate::LexError>(), 56);
         assert_eq!(size_of::<crate::ParseError>(), 16);
-        assert_eq!(size_of::<crate::EvalAltResult>(), 64);
+        assert_eq!(size_of::<crate::EvalAltResult>(), 72);
     }
 }