diff --git a/u02/src/util.cpp b/u02/src/util.cpp
index 78369d0..865136a 100644
--- a/u02/src/util.cpp
+++ b/u02/src/util.cpp
@@ -3,18 +3,18 @@
 #include <cmath>
 
 void transform_mut(Transformation transformation, int &x, int &y) {
-  if ((transformation & TRANSFORM_ROTATE_CW) != 0) {
+  if (transformation & TRANSFORM_ROTATE_CW) {
     std::swap(x, y);
     x = -x;
   }
-  if ((transformation & TRANSFORM_ROTATE_CCW) != 0) {
+  if (transformation & TRANSFORM_ROTATE_CCW) {
     std::swap(x, y);
     y = -y;
   }
-  if ((transformation & TRANSFORM_MIRROR_X) != 0) {
+  if (transformation & TRANSFORM_MIRROR_X) {
     y = -y;
   }
-  if ((transformation & TRANSFORM_MIRROR_Y) != 0) {
+  if (transformation & TRANSFORM_MIRROR_Y) {
     x = -x;
   }
 }
@@ -25,10 +25,10 @@ std::pair<int, int> transform(Transformation transformation, int x, int y) {
 }
 
 void transform_inv_mut(Transformation transformation, int &x, int &y) {
-  if ((transformation & TRANSFORM_MIRROR_Y) != 0) {
+  if (transformation & TRANSFORM_MIRROR_Y) {
     x = -x;
   }
-  if ((transformation & TRANSFORM_MIRROR_X) != 0) {
+  if (transformation & TRANSFORM_MIRROR_X) {
     y = -y;
   }
   if (transformation & TRANSFORM_ROTATE_CCW) {