diff --git a/tests/functional/import-derivation.sh b/tests/functional/import-derivation.sh
index 53efa1f5d..96cc30646 100755
--- a/tests/functional/import-derivation.sh
+++ b/tests/functional/import-derivation.sh
@@ -11,4 +11,4 @@ fi
 
 outPath=$(nix-build ./import-derivation.nix --no-out-link)
 
-[ "$(cat $outPath)" = FOO579 ]
+[ "$(cat "$outPath")" = FOO579 ]