diff --git a/src/math/faktor/faktor.pysty b/src/math/faktor/faktor.pysty
index 2f450a4..ae1b2de 100644
--- a/src/math/faktor/faktor.pysty
+++ b/src/math/faktor/faktor.pysty
@@ -30,7 +30,7 @@ __HEADER__(Faktor package that also handles cofaktors)
   \raisebox{#4\ht2}{\usebox2}% Denominator
 }
 
-\DeclareDocumentCommand{\cofaktor}{s m O{-0.5} m O{0.5}}{% \newfaktor[*][#2]{#3}[#4]{#5} -> #2\#4
+\DeclareDocumentCommand{\cofaktor}{s O{-0.5} m O{0.5} m}{% \newfaktor[*][#2]{#3}[#4]{#5} -> #2\#4
   \setbox0=\hbox{\ensuremath{#3}}% Store numerator
   \setbox1=\hbox{\ensuremath{\diagdown}}% Store slash /
   \setbox2=\hbox{\ensuremath{#5}}% Store denominator