diff --git a/lib/extensions/params.py b/lib/extensions/params.py
index 0a593fdce..a627ed352 100644
--- a/lib/extensions/params.py
+++ b/lib/extensions/params.py
@@ -695,8 +695,8 @@ class Params(InkstitchExtension):
         else:
             getter = 'get_param'
 
-        values = [item for item in (getattr(node, getter)(
-            param.name, param.default) for node in nodes) if item is not None]
+        values = [item if item is not None else "" for item in (getattr(node, getter)(
+            param.name, param.default) for node in nodes)]
 
         return values