diff --git a/nnpdf_data/nnpdf_data/commondata/CMS_Z0J_8TEV/filter.py b/nnpdf_data/nnpdf_data/commondata/CMS_Z0J_8TEV/filter.py
index 23493ff6b5..bb4112c2a1 100644
--- a/nnpdf_data/nnpdf_data/commondata/CMS_Z0J_8TEV/filter.py
+++ b/nnpdf_data/nnpdf_data/commondata/CMS_Z0J_8TEV/filter.py
@@ -12,5 +12,5 @@
 
 if __name__ == "__main__":
     CMS_Z0J_8TEV = Extractor("./metadata.yaml", "PT-Y", mult_factor=1000)
-    CMS_Z0J_8TEV.generate_data(variant='default', save_to_yaml=True)
-    CMS_Z0J_8TEV.generate_data(variant='sys_10', save_to_yaml=True)
+    CMS_Z0J_8TEV.generate_data(variant='default')
+    CMS_Z0J_8TEV.generate_data(variant='sys_10')