diff --git a/src/lib.rs b/src/lib.rs
index 273f76e4..42bc5fda 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -68,7 +68,6 @@ include!(concat!(env!("OUT_DIR"), "/bindings.rs"));
 
 #[non_exhaustive]
 #[repr(transparent)]
-#[derive(Debug)]
 pub struct SEXPREC(std::ffi::c_void);
 
 extern "C" {