diff --git a/tests/functional/derivation-advanced-attributes.sh b/tests/functional/derivation-advanced-attributes.sh
index 271f17dc6..6707b345c 100755
--- a/tests/functional/derivation-advanced-attributes.sh
+++ b/tests/functional/derivation-advanced-attributes.sh
@@ -13,7 +13,7 @@ badExitCode=0
 store="$TEST_ROOT/store"
 
 for nixFile in derivation/*.nix; do
-    drvPath=$(nix-instantiate --store "$store" --pure-eval --expr "$(< "$nixFile")")
+    drvPath=$(env -u NIX_STORE nix-instantiate --store "$store" --pure-eval --expr "$(< "$nixFile")")
     testName=$(basename "$nixFile" .nix)
     got="${store}${drvPath}"
     expected="derivation/$testName.drv"