diff --git a/environments/mkessler-fancythm.sty b/environments/mkessler-fancythm.sty
index 4ec44fc..391d132 100644
--- a/environments/mkessler-fancythm.sty
+++ b/environments/mkessler-fancythm.sty
@@ -14,7 +14,7 @@
 \DeclareOptionX{ownenvironments}{\setkeys{mkesslerfancythm}{ownenvironments=#1}}
 \DeclareOptionX{oralremarks}{\setkeys{mkesslerfancythm}{oralremarks=#1}}
 
-\DeclareOptionX{mkessler@fancythm@lecturenumbers}{\setkeys{mkesslerfancythm}{mkessler@fancythm@lecturenumbers=#1}}
+\DeclareOptionX{lecturenumbers}{\setkeys{mkesslerfancythm}{mkessler@fancythm@lecturenumbers=#1}}
 \DeclareOptionX{numbersmallenvironments}{\setkeys{mkesslerfancythm}{mkessler@fancythm@numbersmallenvironments=#1}}
 
 \DeclareOptionX*{\PackageWarning{mkesslerfancythm}{Unknown X \CurrentOption}}% For unknown options