diff --git a/ctor/src/lib.rs b/ctor/src/lib.rs
index 1c92a8c..1540040 100644
--- a/ctor/src/lib.rs
+++ b/ctor/src/lib.rs
@@ -356,7 +356,7 @@ pub fn dtor(_attribute: TokenStream, function: TokenStream) -> TokenStream {
                     static __dso_handle: *const u8;
                     fn __cxa_atexit(cb: unsafe extern fn(_: *const u8), arg: *const u8, dso_handle: *const u8);
                 }
-                __cxa_atexit(cb, std::ptr::null(), __dso_handle);
+                __cxa_atexit(cb, core::ptr::null(), __dso_handle);
             }
 
             #[used]