diff --git a/lib/tapioca/runtime/reflection.rb b/lib/tapioca/runtime/reflection.rb
index a17c678834..f8b0d4eaa1 100644
--- a/lib/tapioca/runtime/reflection.rb
+++ b/lib/tapioca/runtime/reflection.rb
@@ -48,7 +48,7 @@ def constant_defined?(constant)
       end
       def constantize(symbol, inherit: false, namespace: Object)
         namespace.const_get(symbol, inherit)
-      rescue NameError, LoadError, RuntimeError, ArgumentError, TypeError
+      rescue NameError, LoadError, RuntimeError, ArgumentError, TypeError, ActiveRecord::ConnectionNotEstablished
         UNDEFINED_CONSTANT
       end