Small change in the kitchen -- Huge impact

Something in my kitchen has been bugging me big time ever since my dishwasher was installed. To fix it, I recently made a small change, and that change has had a huge impact on my happiness level! Look at this picture and see if you can figure out what's bothering me about my kitchen.

Black hole under dishwasher
How the toe kick looked after the dishwasher was installed
Can you guess what it is that bugs me?