diff --git a/rtstartup/rsbegin.rs b/rtstartup/rsbegin.rs
index 14bce2bbeee2b..9a3d95bd8ddfb 100644
--- a/rtstartup/rsbegin.rs
+++ b/rtstartup/rsbegin.rs
@@ -29,6 +29,8 @@ trait Copy {}
 #[lang = "freeze"]
 auto trait Freeze {}
 
+impl<T: ?Sized> Copy for *mut T {}
+
 #[lang = "drop_in_place"]
 #[inline]
 #[allow(unconditional_recursion)]
diff --git a/rtstartup/rsend.rs b/rtstartup/rsend.rs
index 714643c83866f..2514eb0034402 100644
--- a/rtstartup/rsend.rs
+++ b/rtstartup/rsend.rs
@@ -17,6 +17,8 @@ trait Copy {}
 #[lang = "freeze"]
 auto trait Freeze {}
 
+impl<T: ?Sized> Copy for *mut T {}
+
 #[lang = "drop_in_place"]
 #[inline]
 #[allow(unconditional_recursion)]