Unwanted shadows on wall

I'm editing a short and in a couple shots I noticed the boom casting a very light shadow on the wall, I only notice it when it moves a bit and I see something moving, any way to fix this in color correction?
 
If it's a plain wall, you may be able to blur it (with a mask), which would hopefully blur the shadow enough to be unnoticeable.
 
Is the frame a lock off? Do you pan or tilt at all?

Since there hasn't been an answer, for anyone wondering, I would guess the purpose of this question is that if the camera was locked off (or even just didn't move very much) you can crop out sections from other frames where the boom shadow ISN'T on the wall, then basically paste those over the frame where it IS on the wall.
 
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