diff --git a/tests/functional/binary-cache-build-remote.sh b/tests/functional/binary-cache-build-remote.sh
index 0303e9410..4edda85b6 100755
--- a/tests/functional/binary-cache-build-remote.sh
+++ b/tests/functional/binary-cache-build-remote.sh
@@ -12,7 +12,7 @@ clearCacheCache
 outPath=$(nix-build --store "file://$cacheDir" --builders 'auto - - 1 1' -j0 dependencies.nix)
 
 # Test that the path exactly exists in the destination store.
-nix path-info --store "file://$cacheDir" $outPath
+nix path-info --store "file://$cacheDir" "$outPath"
 
 # Succeeds without any build capability because no-op
 nix-build --store "file://$cacheDir" -j0 dependencies.nix