diff --git a/tests/functional/flakes/absolute-attr-paths.sh b/tests/functional/flakes/absolute-attr-paths.sh
index 8ed1755c4..b0e6225d8 100755
--- a/tests/functional/flakes/absolute-attr-paths.sh
+++ b/tests/functional/flakes/absolute-attr-paths.sh
@@ -4,8 +4,8 @@ source ./common.sh
 
 flake1Dir=$TEST_ROOT/flake1
 
-mkdir -p $flake1Dir
-cat > $flake1Dir/flake.nix <<EOF
+mkdir -p "$flake1Dir"
+cat > "$flake1Dir"/flake.nix <<EOF
 {
     outputs = { self }: {
         x = 1;
@@ -14,6 +14,6 @@ cat > $flake1Dir/flake.nix <<EOF
 }
 EOF
 
-[ "$(nix eval --impure --json $flake1Dir#.x)" -eq 1 ]
-[ "$(nix eval --impure --json $flake1Dir#x)" -eq 2 ]
-[ "$(nix eval --impure --json $flake1Dir#.packages.$system.x)" -eq 2 ]
+[ "$(nix eval --impure --json "$flake1Dir"#.x)" -eq 1 ]
+[ "$(nix eval --impure --json "$flake1Dir#x")" -eq 2 ]
+[ "$(nix eval --impure --json "$flake1Dir"#.packages."$system".x)" -eq 2 ]