diff --git a/pre_commit/main.py b/pre_commit/main.py
index 50a2e519..559c927c 100644
--- a/pre_commit/main.py
+++ b/pre_commit/main.py
@@ -38,7 +38,7 @@ logger = logging.getLogger('pre_commit')
 os.environ.pop('__PYVENV_LAUNCHER__', None)
 
 # https://github.com/getsentry/snuba/pull/5388
-os.environ.pop("PYTHONEXECUTABLE", None)
+os.environ.pop('PYTHONEXECUTABLE', None)
 
 COMMANDS_NO_GIT = {
     'clean', 'gc', 'init-templatedir', 'sample-config',