diff --git a/gap/quasigroups.gi b/gap/quasigroups.gi
index 5f90030..2414579 100644
--- a/gap/quasigroups.gi
+++ b/gap/quasigroups.gi
@@ -804,7 +804,7 @@ function( list, dummy )
 ##  possible 
 
 InstallGlobalFunction( OppositeQuasigroup,
-                       Q -> IntoQuasigroup( Opposite( L ) ) );
+                       Q -> IntoQuasigroup( Opposite( Q ) ) );
 
 #############################################################################
 ##