diff --git a/doc/benchmark.conf.sample b/doc/benchmark.conf.sample
index ea69746e..528d33e0 100644
--- a/doc/benchmark.conf.sample
+++ b/doc/benchmark.conf.sample
@@ -4,10 +4,10 @@
 # - results of patched Python are written into json_dir/patch/
 json_dir = ~/json
 
-# If True, compile CPython is debug mode (LTO and PGO disabled),
+# If True, compile CPython in debug mode (LTO and PGO disabled),
 # run benchmarks with --debug-single-sample, and disable upload.
 #
-# Use this option used to quickly test a configuration.
+# Use this option to quickly test a configuration.
 debug = False