It happened just before 2:30 a.m. in the Sunnyside area.
The officer was northbound on Scott Street when a southbound driver failed to yield while turning right and hit the officer's cruiser, police said.
The officer was taken to Memorial Hermann Pearland Hospital to be treated for a minor leg injury, according to Houston police.
Officers said they were investigating the crash as a DWI incident.
There was no word on the identity of the officer or if an arrest was made.
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