diff --git a/t/perf/p7527-builtin-fsmonitor.sh b/t/perf/p7527-builtin-fsmonitor.sh
index c3f9a4caa4..90164327e8 100755
--- a/t/perf/p7527-builtin-fsmonitor.sh
+++ b/t/perf/p7527-builtin-fsmonitor.sh
@@ -95,7 +95,7 @@ test_expect_success "Setup borrowed repo (fsm+uc)" "
 # time is not useful.
 #
 # Create a temp branch and do all work relative to it so that we don't
-# accidentially alter the real ballast branch.
+# accidentally alter the real ballast branch.
 #
 test_expect_success "Setup borrowed repo (temp ballast branch)" "
 	test_might_fail git -C $REPO checkout $BALLAST_BR &&
diff --git a/t/perf/perf-lib.sh b/t/perf/perf-lib.sh
index ab0c763411..8ab6d9c469 100644
--- a/t/perf/perf-lib.sh
+++ b/t/perf/perf-lib.sh
@@ -282,7 +282,7 @@ test_perf_ () {
 #	Run the performance test script specified in perf-test with
 #	optional prerequisite and setup steps.
 # Options:
-#	--prereq prerequisites: Skip the test if prequisites aren't met
+#	--prereq prerequisites: Skip the test if prerequisites aren't met
 #	--setup "setup-steps": Run setup steps prior to each measured iteration
 #
 test_perf () {
@@ -309,7 +309,7 @@ test_size_ () {
 #	prerequisites and setup steps. Returns the numeric value
 #	returned by size-test.
 # Options:
-#	--prereq prerequisites: Skip the test if prequisites aren't met
+#	--prereq prerequisites: Skip the test if prerequisites aren't met
 #	--setup "setup-steps": Run setup steps prior to the size measurement
 
 test_size () {