From aad232ffc64240a24f5421c46df0a5d84aceff0a Mon Sep 17 00:00:00 2001
From: Axel Kohlmeyer <akohlmey@gmail.com>
Date: Tue, 22 Aug 2023 11:46:57 -0400
Subject: [PATCH] fix typo

---
 src/variable.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/variable.cpp b/src/variable.cpp
index ce8f16cd68..f3c987f00c 100644
--- a/src/variable.cpp
+++ b/src/variable.cpp
@@ -1997,7 +1997,7 @@ double Variable::evaluate(char *str, Tree **tree, int ivar)
           // scalar from internal-style variable
           // access value directly
 
-          if (style[ivar] = INTERNAL) {
+          if (style[ivar] == INTERNAL) {
 
             value1 = dvalue[ivar];
             if (tree) {