diff --git a/build_info.json b/build_info.json
index f7d4d27..782e1ba 100644
--- a/build_info.json
+++ b/build_info.json
@@ -1,8 +1,8 @@
 {
     "build_time": "",
     "source files": {
-        "version": "v2.9-8-gefa4817",
-        "commit": "efa4817c51e28ce23949d51d4ebf75f9944ae720",
+        "version": "v2.9-9-g6db316f",
+        "commit": "6db316f4a0aaf7350ebd67c7ebbe61046c9e97f4",
         "dirty": false
     },
     "pytex": {
@@ -36,12 +36,12 @@
         {
             "name": "math/mathop/mkessler-mathop.sty",
             "source file": "math/mathop/mathop.pysty",
-            "build time": "2022/02/16 00:53",
-            "source version": "v2.9-8-gefa4817",
-            "source commit hash": "efa4817c51e28ce23949d51d4ebf75f9944ae720",
+            "build time": "2022/02/16 01:05",
+            "source version": "v2.9-9-g6db316f",
+            "source commit hash": "6db316f4a0aaf7350ebd67c7ebbe61046c9e97f4",
             "pytex version": "v1.2.0-31-gc9bb0e8",
             "pytex commit hash": "c9bb0e87c91beae3e17a829603e4459cf804ec51",
-            "md5sum": "353eefb18dc7ec2bab83ccb037949e79",
+            "md5sum": "4c5d43e6eb457008b5a14e9d6d5a3d14",
             "dirty": false
         },
         {
diff --git a/math/mathop/mkessler-mathop.sty b/math/mathop/mkessler-mathop.sty
index 636eba7..5af3cfe 100644
--- a/math/mathop/mkessler-mathop.sty
+++ b/math/mathop/mkessler-mathop.sty
@@ -31,7 +31,7 @@
 % 
 % Build details:
 %   PyTeX version: v1.2.0-31-gc9bb0e8 (commit c9bb0e8)
-%   Source code version: v2.9-8-gefa4817 (commit efa4817)
+%   Source code version: v2.9-9-g6db316f (commit 6db316f)
 % 
 % This LaTeX package is free software and is dual-licensed
 % under the LPPLv1.3c and the GPLv3 licenses.
@@ -99,11 +99,11 @@
 % The starred versions of the four commands will ignore the language option and print their
 % exact names (without the *, of course)
 \DeclareMathOperator{\@mkessler@mathop@ggT}{ggT}
-\DeclareMathOperator{\@@mkessler@mathop@ggT}{\if@mkessler@mathop@english gcd\else ggT\fi}
+\DeclareMathOperator{\@@mkessler@mathop@ggT}{\ifmkessler@mathop@english gcd\else ggT\fi}
 \def\ggT{\@ifstar\@mkessler@mathop@ggT\@@mkessler@mathop@ggT}
 
 \DeclareMathOperator{\@mkessler@mathop@gcd}{gcd}
-\DeclareMathOperator{\@@mkessler@mathop@gcd}{\if@mkessler@mathop@english gcd\else ggT\fi}
+\DeclareMathOperator{\@@mkessler@mathop@gcd}{\ifmkessler@mathop@english gcd\else ggT\fi}
 \def\gcd{\@ifstar\@mkessler@mathop@gcd\@@mkessler@mathop@gcd}
 
 \DeclareMathOperator{\@mkessler@mathop@kgV}{kgV}