From 3e35b4f739fc7370e5b7115eef0d2795f73965c7 Mon Sep 17 00:00:00 2001
From: Gregory Ashton <gregory.ashton@ligo.org>
Date: Mon, 7 Feb 2022 15:19:06 +0000
Subject: [PATCH] Avoid recalculation of mass_ratio

---
 bilby/gw/conversion.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/bilby/gw/conversion.py b/bilby/gw/conversion.py
index 9c516c737..2c236e2a4 100644
--- a/bilby/gw/conversion.py
+++ b/bilby/gw/conversion.py
@@ -174,7 +174,7 @@ def convert_to_lal_binary_black_hole_parameters(parameters):
                 chirp_mass_and_total_mass_to_symmetric_mass_ratio(
                     converted_parameters['chirp_mass'],
                     converted_parameters['total_mass'])
-        if 'symmetric_mass_ratio' in converted_parameters.keys():
+        if 'symmetric_mass_ratio' in converted_parameters.keys() and "mass_ratio" not in converted_parameters:
             converted_parameters['mass_ratio'] =\
                 symmetric_mass_ratio_to_mass_ratio(
                     converted_parameters['symmetric_mass_ratio'])
-- 
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