From 1e042a4ca0803919476a2b02395a1bd9a7127f07 Mon Sep 17 00:00:00 2001
From: Isuru Fernando <idf2@illinois.edu>
Date: Wed, 22 Sep 2021 17:30:26 -0500
Subject: [PATCH] Fix sympy type

---
 sumpy/kernel.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sumpy/kernel.py b/sumpy/kernel.py
index d4c45a4b..859b2dbd 100644
--- a/sumpy/kernel.py
+++ b/sumpy/kernel.py
@@ -239,7 +239,7 @@ class Kernel:
         The typical use of this function is to apply target-variable
         derivatives to the kernel.
 
-        :arg expr: may be a :class:`sympy.Expr` or a
+        :arg expr: may be a :class:`sympy.core.expr.Expr` or a
             :class:`sumpy.tools.DifferentiatedExprDerivativeTaker`.
         """
         return expr
-- 
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