diff --git a/src/easyreflectometry/project.py b/src/easyreflectometry/project.py
index d5df4133..65c9a433 100644
--- a/src/easyreflectometry/project.py
+++ b/src/easyreflectometry/project.py
@@ -453,9 +453,9 @@ def _timestamp_modification(self):
 
     def free_parameters_count(self) -> int:
         count = 0
-        for parameter in self.parameters:
-            #            if parameter:
-            count = count + 1
+        for i in range(len(self.parameters)):
+            if self.parameters[i].free:
+                count = count + 1
         return count
 
     #     return sum(1 for parameter in self.parameters if parameter.free)