Simply essential clothing rack shelf clip

Wife bought a clothing rack from Bed, bath, and beyond and the top shelf sits in two ridged plastic holders. The problem is that they have nothing holding the shelf down and having things not balanced on the shelf causes it to see-saw and dump things. I made this simple clip to fit the side grooves of the two brackets and firmly keep the top shelf in place. It takes 2 per side, so 4 total to print.