Germany forward Miroslav Klose has recovered from injury just in time for next month's European Championships in Poland and Ukraine.
The 33-year-old had been hampered by a thigh problem since March.
But the Lazio striker will feature in Saturday's friendly against Switzerland and continue his quest to break Gerd Muller's all-time goalscoring record for Germany.
Klose is just five goals short of Muller's tally of 68 international goals but has had to work hard to impress Germany boss Joachim Low and prove his fitness.
"I had my concerns regarding Miro a few weeks ago but since I saw him back in training those worries have become smaller and smaller," said Low.
"In just a short time Miro is again very dynamic and good. He has had a couple of days off with a back problem but he has trained again.
"Miro makes an extremely good impression but the next two weeks will be crucial for him as well.
"He will need to work. Now it is 60-70 minutes but we need him in top performance for 90 minutes. He must be able to complete the (training) programme."
Klose is of Polish origin and will be desperate not to miss the tournament in the country of his birth.
The former Kaiserslautern striker will have an opportunity against the Swiss due to the absence of Mario Gomez, who is rested along with the rest of the Bayern Munich players in the squad.
Eight Bayern stars are yet to link up with the rest of the camp after being given an extended break following the disappointment of their UEFA Champions League final defeat to Chelsea last weekend.
And Low admits it is not ideal preparation for the tournament that starts on June 8th.
"That the Bayern players come too late, we know it and what can you do?" said Low.
"Obviously it would have been great if they were here 10 days ago but that is the way it is now.
"They arrive today, they join training on Monday. Tactics are in the foreground and Bayern have to work a bit to catch up. We have made a lot of analyses and they have to catch up."
Germany take on Denmark, Portugal and Netherlands in the tournament group stage.