diff --git a/scripts/ezfio_interface/qp_convert_output_to_ezfio.py b/scripts/ezfio_interface/qp_convert_output_to_ezfio.py
index 4d215f7f..3c515485 100755
--- a/scripts/ezfio_interface/qp_convert_output_to_ezfio.py
+++ b/scripts/ezfio_interface/qp_convert_output_to_ezfio.py
@@ -127,6 +127,7 @@ def write_ezfio(res, filename):
     coefficient = []
     exponent = []
 
+    res.convert_to_cartesian()
     # ~#~#~#~#~#~#~ #
     # P a r s i n g #
     # ~#~#~#~#~#~#~ #