diff --git a/labs/datalab/bits.c b/labs/datalab/bits.c
index a420dff..802fd37 100644
--- a/labs/datalab/bits.c
+++ b/labs/datalab/bits.c
@@ -212,8 +212,7 @@ int isAsciiDigit(int x) {
  *   Rating: 3
  */
 int conditional(int x, int y, int z) {
-  x = !!x;
-  x = (x << 31) >> 31;
+  x = !x - 1;
   return (x & y) | (~x & z);
 }
 /*