diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 4f89184d05..b27a6552aa 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -1615,7 +1615,7 @@ static abi_long do_pipe(CPUArchState *cpu_env, abi_ulong pipedes,
     }
 
     if (put_user_s32(host_pipe[0], pipedes)
-        || put_user_s32(host_pipe[1], pipedes + sizeof(host_pipe[0])))
+        || put_user_s32(host_pipe[1], pipedes + sizeof(abi_int)))
         return -TARGET_EFAULT;
     return get_errno(ret);
 }