From dbb79949658b75eecda44c0b98f506a6c0ce654c Mon Sep 17 00:00:00 2001
From: Kaelyn Dunnell <150201080+kaelyndunnell@users.noreply.github.com>
Date: Tue, 5 Nov 2024 16:30:35 -0500
Subject: [PATCH] Update src/festim/stepsize.py
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Co-authored-by: Rémi Delaporte-Mathurin <40028739+RemDelaporteMathurin@users.noreply.github.com>
---
 src/festim/stepsize.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/festim/stepsize.py b/src/festim/stepsize.py
index 2e8274bee..28840efb0 100644
--- a/src/festim/stepsize.py
+++ b/src/festim/stepsize.py
@@ -98,7 +98,7 @@ def max_stepsize(self):
 
     @max_stepsize.setter
     def max_stepsize(self, value):
-        if value is not None and not callable(value):
+        if isinstance(value, float):
             if value < self.initial_value:
                 raise ValueError(
                     "maximum stepsize cannot be less than initial stepsize"