diff --git a/refinery_macros/src/lib.rs b/refinery_macros/src/lib.rs
index 47ff402d..0ce2df38 100644
--- a/refinery_macros/src/lib.rs
+++ b/refinery_macros/src/lib.rs
@@ -48,7 +48,6 @@ fn migration_enum_quoted(migration_names: &[impl AsRef<str>]) -> TokenStream2 {
         discriminants.push(quote! { v => panic!("Invalid migration version '{}'", v) });
 
         let result = quote! {
-            #[repr(i64)]
             #[derive(Debug)]
             pub enum EmbeddedMigration {
                 #(#variants),*