diff --git a/src/Groups.jl b/src/Groups.jl
index 4458389..07febd1 100644
--- a/src/Groups.jl
+++ b/src/Groups.jl
@@ -22,9 +22,6 @@ doc"""
 abstract GSymbol
 
 
-length(s::GSymbol) = (s.pow == 0 ? 0 : 1)
-
-change_pow(s::GSymbol, n::Int) = throw(ArgumentError("Define change_pow function for $(typeof(s))!"))
 
     symbols::Vector{T}
     savedhash::UInt