diff --git a/spec/serializable_spec.cr b/spec/serializable_spec.cr
index bf2b2d8..60c25f8 100644
--- a/spec/serializable_spec.cr
+++ b/spec/serializable_spec.cr
@@ -105,7 +105,7 @@ describe "DB::Serializable" do
   end
 
   it "should fail to initialize a simple model if types do not match" do
-    expect_raises DB::MappingException, "Invalid Int32: b\n  deserializing SimpleModel#c0" do
+    expect_raises DB::MappingException, /Invalid Int32: "?b"?\n  deserializing SimpleModel#c0/ do
       from_dummy("b,a", SimpleModel)
     end
   end