Liverpool have won their opening five league matches and are second in the table, level on points with Chelsea, and Klopp says Salah remains a "threat" to the opposition.
Mohamed Salah's sluggish start to the season is down to a fear of getting injured again after Sergio Ramos' tackle.
"On the defensive side the last two games were outstanding, ideal from him", said Klopp, according to the official Liverpool website.
"It is a completely normal for an offensive player when you have times that you don't score".
"I sent him a message on Monday saying, "Hey Bobby, come on, we need you". Nobody remembers that, so it's really no problem. "He needed time last year, like we all needed time, and it will take time this year, that's all". You sense they are very close and they are as good as they have been for a number of years. The start was good for us as a team and for him as well.
He has scored twice in six matches this term, though he had only one more goal at this stage of the 2017-18 campaign. His first Premier League start for the Reds was in the Swansea defeat but since then Liverpool have lost only four in 25 in all competitions with the Dutch defender in the line-up and all four were against teams of Champions League calibre.
"I think Bobby doesn't need his eye to play so I told him", said the Senegal worldwide after the thrilling 3-2 win over PSG.