diff --git a/utils/heapq.c b/utils/heapq.c
index a7637be..ec9eb24 100644
--- a/utils/heapq.c
+++ b/utils/heapq.c
@@ -131,7 +131,7 @@ _siftupmax_s(heap_t *h, __TYPE spos)
         /* Set childpos to index of smaller child.   */
         rightpos = childpos + 1;
         if (rightpos < endpos) {
-            if (! (heap[rightpos] < heap[childpos]))
+            if (heap[rightpos] < heap[childpos])
                 childpos = rightpos;
         }
         /* Move the smaller child up. */