diff --git a/LibOS/shim/src/sys/shim_poll.c b/LibOS/shim/src/sys/shim_poll.c
index 59aef0d2..91621533 100644
--- a/LibOS/shim/src/sys/shim_poll.c
+++ b/LibOS/shim/src/sys/shim_poll.c
@@ -126,7 +126,7 @@ static int __do_poll (int npolls, struct poll_handle * polls,
 
     lock(map->lock);
 
-    for (p = polls ; p < &polls[npolls] ; p++) {
+    for (p = polls ; p < polls + npolls ; p++) {
         bool do_r = p->flags & DO_R;
         bool do_w = p->flags & DO_W;