diff --git a/src/utilities.c b/src/utilities.c
index f1b7fb7..1e22422 100644
--- a/src/utilities.c
+++ b/src/utilities.c
@@ -15,7 +15,11 @@
  * @return the smallest short c such that c >= a / b
  */
 short ceil_div_short(short a, short b) {
-	return (a + (b - 1)) / b; 
+	if (a % b) {
+		return (a / b) + 1;
+	} else {
+		return a / b;
+	}
 }
 
 /**