Bayern Munich president Uli Hoeness fears the Bundesliga has become too easy for his club, and hopes his club's rivals can catch up quickly.
The German champion-elect has sealed its 23rd title with six games to spare and is now just one win away from matching the record number of points for a season, set by Borussia Dortmund last year.
Those two clubs seem set to dominate German football for years to come, but Hoeness hopes a duopoly such as the one in Spain with Barcelona and Real Madrid does not become reality in the Bundesliga.
"There has been a huge dip in the competitiveness of the league and we can't be happy with that," he told Kicker magazine. "We've got to analyze why that is the case."
Bayern's recent 9-1 hammering of Hamburg and a goal difference of plus-70 after 29 games is proof of the gulf that has opened up at the top.
Second-placed Dortmund, which put six past Greuther Furth on Saturday, has scored 72 goals this season, almost 20 more than anybody below it, and the two Champions League semifinalists appear to be in a league of their own this year.
Hoeness hopes his side will be put to a more serious test next season.
"We see the need for action," he said. "It is not on that we see such results."
With the Bundesliga wrapped up, and a Champions League semifinal meeting with Barcelona booked, Bayern goes in search of a place in the DFB-Pokal cup final when it hosts Wolfsburg at the Allianz Arena on Tuesday.
Bayern Munich coach Jupp Heynckes said he is not taking anything for granted.
Heynckes, whose side has a 44-point advantage over its rival in the Bundesliga, is expecting a stern test of his players' credentials from a Wolfsburg side that will be desperate to keep its European qualification hopes alive with victory in the semifinal.
"It's not going to be easy," he said. "The final in Berlin is an important goal for Wolfsburg. They are the third-strongest side away from home in the second half of the season and have improved a lot."
Information from Press Association was used in this report.