diff --git a/Lib/gftools/subsetmerger.py b/Lib/gftools/subsetmerger.py
index 42f20f5d..47d410bd 100644
--- a/Lib/gftools/subsetmerger.py
+++ b/Lib/gftools/subsetmerger.py
@@ -122,11 +122,11 @@ def add_subsets(self):
         for master in ds.sources:
             newpath = os.path.join(outpath, os.path.basename(master.path))
             target_ufo = open_ufo(master.path)
+            master.path = newpath
+
             if master.layerName is not None:
                 continue
 
-            master.path = newpath
-
             for subset in self.subsets:
                 added_subsets |= self.add_subset(target_ufo, ds, master, subset)