diff --git a/sypex.go b/sypex.go
index 9ae7086..fddd06f 100644
--- a/sypex.go
+++ b/sypex.go
@@ -110,8 +110,11 @@ func (f *finder) searchIdx(IPn, min, max uint32) uint32 {
 			max = offset
 		}
 	}
-	for IPn > uint32(f.S.MIndex[min]) && min < max {
+	for IPn > uint32(f.S.MIndex[min]) {
 		min++
+		if min > max {
+			break
+		}
 	}
 	return min
 }