diff --git a/exercise/ex2-76.c b/exercise/ex2-76.c
index a592cf9..7f5bda2 100644
--- a/exercise/ex2-76.c
+++ b/exercise/ex2-76.c
@@ -26,8 +26,8 @@ int main(void)
         t = (x << 3) + x;
         printf("%d * %d = %d\n", x, 9, t);
 
-        /* C. K=30: (1<<5) - (1<<2) */
-        t = (x << 5) - (x << 2);
+        /* C. K=30: (1<<5) - (1<<1) */
+        t = (x << 5) - (x << 1);
         printf("%d * %d = %d\n", x, 30, t);
 
         /* D. K=-56: (1<<3) - (1<<6) */