diff --git a/software/src/nested_util.c b/software/src/nested_util.c
index 430c4738..4686cf1b 100644
--- a/software/src/nested_util.c
+++ b/software/src/nested_util.c
@@ -37,8 +37,10 @@ typedef struct {
 } RecPar;
 
 
-int compar_int(const void *a, const void *b) {
-    return (*(uint64_t *)b - * (uint64_t *)a);
+inline static int compar_int(const void *a, const void *b) {
+    if (*(uint64_t *)b == *(uint64_t *)a) return 0;
+    if (*(uint64_t *)b < * (uint64_t *)a) return 1;
+    return -1;
 }
 
 // Compare countKeys structure