Will my cornsnake become ill from consuming aspen substrate?

I got my 1st pet cornsnake yesterday & it was due to be fed. I let it settle last night & fed it this afternoon. I prepared an area in it's enclosure, substrate free, for it to feed but whilst enticing the snake with the pinky I dropped it (oops) on the snakes body. It didn't seem to mind & quickly took the pinky & consumed it. Unfortunately 1 small piece of substrate stuck to the pinky as it was eaten & all went down together. Should I be worried? Will my snake become impacted or ill in any way?