From 7a833f8475a394a25e45f09dc7bce1dc4cd8b25f Mon Sep 17 00:00:00 2001
From: Erin Allard <allard.erin@gmail.com>
Date: Mon, 4 May 2020 18:32:20 -0700
Subject: [PATCH] Correct equation typo in Sersic2D docs[skip travis]

---
 astropy/modeling/functional_models.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/astropy/modeling/functional_models.py b/astropy/modeling/functional_models.py
index 734dd55a83cd..b634a56c596d 100644
--- a/astropy/modeling/functional_models.py
+++ b/astropy/modeling/functional_models.py
@@ -2390,7 +2390,7 @@ class Sersic2D(Fittable2DModel):
 
     .. math::
 
-        \Gamma(2n) = 2\gamma (b_n,2n)
+        \Gamma(2n) = 2\gamma (2n,b_n)
 
     Examples
     --------