diff --git a/src/WreathProducts.jl b/src/WreathProducts.jl
index 80cbdd1..a490905 100644
--- a/src/WreathProducts.jl
+++ b/src/WreathProducts.jl
@@ -49,7 +49,7 @@ end
 #
 ###############################################################################
 
-elem_type{T<:Group}(G::WreathProduct{T}) = WreathProductElem{elem_type(T)}
+elem_type{T<:Group}(::WreathProduct{T}) = WreathProductElem{elem_type(T)}
 
 parent_type{T<:GroupElem}(::Type{WreathProductElem{T}}) =
    WreathProduct{parent_type(T)}