Bayern Munich head to Qatar for the Fifa Club World Cup with a 10-point lead at the top of the Bundesliga after victory in snowy Berlin.
Bayern were dominant if not at their fluent best throughout, with Robert Lewandowski missing an early penalty.
Kingsley Coman scored the only goal with a deflected shot from range that looped over Rune Jarstein and in.
The German champions could not find a second goal and had a scare when Matheus Cunha ran clear but shot wide.
Hertha are only out of the relegation zone on goal difference.
Bayern face African champions Al Ahly in Monday's Club World Cup semi-final - a match you can watch live on the BBC Sport website and Red Button.
Champions League winners Bayern could win their sixth trophy in nine months if they win in Qatar.
Line-ups
Hertha Berlin
Formation 4-2-3-1
22Jarstein
2Pekarík5Stark25Torunarigha17Mittelstädt
29Tousart18Ascacibar
11Lukebakio6Darida10Matheus Cunha
9Piatek
- 22Jarstein
- 2Pekarík
- 5Stark
- 25TorunarighaSubstituted forAldereteat 45'minutes
- 17Mittelstädt
- 29Tousart
- 18AscacibarSubstituted forKhediraat 81'minutesBooked at 90mins
- 11LukebakioSubstituted forLeckieat 81'minutes
- 6DaridaBooked at 41minsSubstituted forGuendouziat 56'minutes
- 10Matheus Cunha
- 9PiatekSubstituted forRadonjicat 63'minutes
Substitutes
- 1Schwolow
- 7Leckie
- 8Guendouzi
- 13Klünter
- 14Alderete
- 23Löwen
- 24Radonjic
- 28Khedira
- 31Dárdai
Bayern Munich
Formation 4-1-4-1
1Neuer
5Pavard4Süle27Alaba21Hernández
6Kimmich
10Sané7Gnabry25Müller29Coman
9Lewandowski
- 1Neuer
- 5PavardBooked at 31mins
- 4Süle
- 27Alaba
- 21Hernández
- 6Kimmich
- 10SanéSubstituted forDouglas Costaat 73'minutes
- 7GnabrySubstituted forTolissoat 73'minutes
- 25Müller
- 29ComanSubstituted forChoupo-Motingat 86'minutes
- 9Lewandowski
Substitutes
- 11Douglas Costa
- 13Choupo-Moting
- 17Boateng
- 19Davies
- 20Sarr
- 22Roca
- 24Tolisso
- 39Hoffmann
- 42Musiala
Referee:Robert Schröder
Match Stats
Live Text
Match ends, Hertha Berlin 0, FC Bayern München 1.
Second Half ends, Hertha Berlin 0, FC Bayern München 1.
Hand ball by Mathew Leckie (Hertha Berlin).
Sami Khedira (Hertha Berlin) is shown the yellow card.
Joshua Kimmich (FC Bayern München) wins a free kick in the defensive half.
Foul by Matheus Cunha (Hertha Berlin).
Attempt missed. Matheus Cunha (Hertha Berlin) right footed shot from the centre of the box is close, but misses to the right. Assisted by Matteo Guendouzi with a through ball.
Attempt saved. Nemanja Radonjic (Hertha Berlin) left footed shot from the left side of the box is saved in the centre of the goal. Assisted by Matheus Cunha.
Substitution, FC Bayern München. Eric Maxim Choupo-Moting replaces Kingsley Coman.
Substitution, Hertha Berlin. Mathew Leckie replaces Dodi Lukébakio.
Substitution, Hertha Berlin. Sami Khedira replaces Santiago Ascacibar.
Foul by Benjamin Pavard (FC Bayern München).
Nemanja Radonjic (Hertha Berlin) wins a free kick on the left wing.
Offside, Hertha Berlin. Rune Jarstein tries a through ball, but Dodi Lukébakio is caught offside.
Offside, FC Bayern München. Thomas Müller tries a through ball, but Robert Lewandowski is caught offside.
Attempt blocked. Thomas Müller (FC Bayern München) right footed shot from the centre of the box is blocked. Assisted by Benjamin Pavard with a headed pass.
Corner, FC Bayern München. Conceded by Maximilian Mittelstädt.
Corner, FC Bayern München. Conceded by Omar Alderete.
Corner, FC Bayern München. Conceded by Maximilian Mittelstädt.
Attempt saved. Robert Lewandowski (FC Bayern München) right footed shot from outside the box is saved in the centre of the goal. Assisted by Thomas Müller.
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