diff --git a/maintainers/flake-module.nix b/maintainers/flake-module.nix
index 3012b6427..c531c9297 100644
--- a/maintainers/flake-module.nix
+++ b/maintainers/flake-module.nix
@@ -108,7 +108,6 @@
               # We haven't linted these files yet
               ''^scripts/install-multi-user\.sh$''
               ''^scripts/install-systemd-multi-user\.sh$''
-              ''^tests/functional/characterisation-test-infra\.sh$''
               ''^tests/functional/common/vars-and-functions\.sh$''
               ''^tests/functional/completions\.sh$''
               ''^tests/functional/compute-levels\.sh$''
diff --git a/tests/functional/characterisation-test-infra.sh b/tests/functional/characterisation-test-infra.sh
index 279454550..fecae29e8 100755
--- a/tests/functional/characterisation-test-infra.sh
+++ b/tests/functional/characterisation-test-infra.sh
@@ -40,7 +40,7 @@ echo Bye! > "$TEST_ROOT/expected"
   diffAndAcceptInner test "$TEST_ROOT/got" "$TEST_ROOT/expected"
   (( "$badDiff" == 1 ))
 )
-[[ "$(echo Bye! )" == $(< "$TEST_ROOT/expected") ]]
+[[ "Bye!" == $(< "$TEST_ROOT/expected") ]]
 
 # _NIX_TEST_ACCEPT=1 matches non-empty
 echo Hi! > "$TEST_ROOT/got"
@@ -57,7 +57,7 @@ echo Bye! > "$TEST_ROOT/expected"
   _NIX_TEST_ACCEPT=1 diffAndAcceptInner test "$TEST_ROOT/got" "$TEST_ROOT/expected"
   (( "$badDiff" == 1 ))
 )
-[[ "$(echo Hi! )" == $(< "$TEST_ROOT/expected") ]]
+[[ "Hi!" == $(< "$TEST_ROOT/expected") ]]
 # second time succeeds
 (
   diffAndAcceptInner test "$TEST_ROOT/got" "$TEST_ROOT/expected"