diff --git a/internal/src/init.rs b/internal/src/init.rs
index 487ee001..7ca90873 100644
--- a/internal/src/init.rs
+++ b/internal/src/init.rs
@@ -389,7 +389,7 @@ fn make_field_check(
             ::core::ptr::write(slot, #path {
                 #(
                     #(#field_attrs)*
-                    #field_name: ::core::panic!(),
+                    #field_name: loop {},
                 )*
                 #zeroing_trailer
             })