diff --git a/src/unix/bsd/freebsdlike/mod.rs b/src/unix/bsd/freebsdlike/mod.rs
index 5f1092048b5b1d858528c6cb5ce971b881b5d37f..4826357a7f8fcdcf94dcfc20639f4c4679b48e88 100644
--- a/src/unix/bsd/freebsdlike/mod.rs
+++ b/src/unix/bsd/freebsdlike/mod.rs
@@ -81,7 +81,7 @@ s! {
     }
 
     pub struct stack_t {
-        pub ss_sp: *mut ::c_char,
+        pub ss_sp: *mut ::c_void,
         pub ss_size: ::size_t,
         pub ss_flags: ::c_int,
     }