diff --git a/sea-orm-macros/src/derives/entity_model.rs b/sea-orm-macros/src/derives/entity_model.rs
index eba2d33f..f3a8d4a2 100644
--- a/sea-orm-macros/src/derives/entity_model.rs
+++ b/sea-orm-macros/src/derives/entity_model.rs
@@ -100,20 +100,8 @@ pub fn expand_derive_entity_model(data: Data, attrs: Vec<Attribute>) -> syn::Res
                                                     ));
                                                 }
                                             } else if name == "auto_increment" {
-                                                if let Lit::Str(litstr) = &nv.lit {
-                                                    auto_increment = match litstr.value().as_str() {
-                                                        "true" => true,
-                                                        "false" => false,
-                                                        _ => {
-                                                            return Err(Error::new(
-                                                                field.span(),
-                                                                format!(
-                                                                    "Invalid auto_increment = {}",
-                                                                    litstr.value()
-                                                                ),
-                                                            ))
-                                                        }
-                                                    };
+                                                if let Lit::Bool(litbool) = &nv.lit {
+                                                    auto_increment = litbool.value();
                                                 } else {
                                                     return Err(Error::new(
                                                         field.span(),