diff --git a/maintainers/flake-module.nix b/maintainers/flake-module.nix
index 85a4d90f1..8277788c6 100644
--- a/maintainers/flake-module.nix
+++ b/maintainers/flake-module.nix
@@ -107,7 +107,6 @@
             excludes = [
               # We haven't linted these files yet
               ''^tests/functional/dump-db\.sh$''
-              ''^tests/functional/export-graph\.sh$''
               ''^tests/functional/export\.sh$''
               ''^tests/functional/extra-sandbox-profile\.sh$''
               ''^tests/functional/fetchClosure\.sh$''
diff --git a/tests/functional/export-graph.sh b/tests/functional/export-graph.sh
index b507b6d3a..0490b580d 100755
--- a/tests/functional/export-graph.sh
+++ b/tests/functional/export-graph.sh
@@ -8,27 +8,29 @@ clearStore
 clearProfiles
 
 checkRef() {
-    nix-store -q --references $TEST_ROOT/result | grepQuiet "$1"'$' || fail "missing reference $1"
+    nix-store -q --references "$TEST_ROOT"/result | grepQuiet "$1"'$' || fail "missing reference $1"
 }
 
 # Test the export of the runtime dependency graph.
 
-outPath=$(nix-build ./export-graph.nix -A 'foo."bar.runtimeGraph"' -o $TEST_ROOT/result)
+outPath=$(nix-build ./export-graph.nix -A 'foo."bar.runtimeGraph"' -o "$TEST_ROOT"/result)
 
-test $(nix-store -q --references $TEST_ROOT/result | wc -l) = 3 || fail "bad nr of references"
+test "$(nix-store -q --references "$TEST_ROOT"/result | wc -l)" = 3 || fail "bad nr of references"
 
 checkRef input-2
-for i in $(cat $outPath); do checkRef $i; done
+# shellcheck disable=SC2013
+for i in $(cat "$outPath"); do checkRef "$i"; done
 
 # Test the export of the build-time dependency graph.
 
 nix-store --gc # should force rebuild of input-1
 
-outPath=$(nix-build ./export-graph.nix -A 'foo."bar.buildGraph"' -o $TEST_ROOT/result)
+outPath=$(nix-build ./export-graph.nix -A 'foo."bar.buildGraph"' -o "$TEST_ROOT"/result)
 
 checkRef input-1
 checkRef input-1.drv
 checkRef input-2
 checkRef input-2.drv
 
-for i in $(cat $outPath); do checkRef $i; done
+# shellcheck disable=SC2013
+for i in $(cat "$outPath"); do checkRef "$i"; done