Alex Morris has moved to allay fears that defender Zac Williams picked up an injury during Saturday's win over Harrogate.
The 18-year-old missed the end of last season and most of pre-season due to an ankle injury, and only managed part of one friendly game on the eve of the new campaign.
But the left-back played 90 minutes in the opening day win at Rochdale and kept his place for the club's first ever clash with Harrogate.
However, he was withdrawn just after the hour-mark, raising concerns that he faced another spell on the sidelines.
The manager said: "Zac came back from an injury a lot quicker than we anticipated, which is a real credit to him. He’s a warrior and desperate to be out on the pitch.
"We knew he wasn't going to last the game but we wanted to see how much we could get out of him. Even when he is tired, he has been making good choices on and off the ball so it hasn’t hurt the team to keep him on.
"But eventually he had to come off. He’s fine, he’s not injured. We had ideas that that change would be the first one we'd have to make, but he will be fine for selection coming into next week."
Crewe travel to face Grimsby Town in the first round of the Carbao Cup tomorrow (Tuesday, August 9, 7.45pm).