1 files changed, 1 insertions, 1 deletions
diff --git a/src/pipe.cpp b/src/pipe.cpp
index b5c656d..e2c3c4d 100644
--- a/src/pipe.cpp
+++ b/src/pipe.cpp
@@ -341,6 +341,6 @@ uint64_t zmq::pipe_t::compute_lwm (uint64_t hwm_)
     if (hwm_ > max_wm_delta * 2)
         return hwm_ - max_wm_delta;
     else
-        return hwm_ / 2;
+        return (hwm_ + 1) / 2;
 }