diff --git a/bilby/gw/prior.py b/bilby/gw/prior.py
index f8425955fb7cb3ae83a6c029af5eb868a8f1f8b4..7d1b37da3bf3c0f35000fc699f6c48cd85aa772e 100644
--- a/bilby/gw/prior.py
+++ b/bilby/gw/prior.py
@@ -630,7 +630,9 @@ Prior._default_latex_labels = {
     'lambda_1': '$\\Lambda_1$',
     'lambda_2': '$\\Lambda_2$',
     'lambda_tilde': '$\\tilde{\\Lambda}$',
-    'delta_lambda_tilde': '$\\delta\\tilde{\\Lambda}$'}
+    'delta_lambda_tilde': '$\\delta\\tilde{\\Lambda}$',
+    'chi_1': '$\\chi_1$',
+    'chi_2': '$\\chi_2$'}
 
 
 class CalibrationPriorDict(PriorDict):