diff --git a/src/Groups.jl b/src/Groups.jl
index e63b1ad..08c08b0 100644
--- a/src/Groups.jl
+++ b/src/Groups.jl
@@ -140,7 +140,7 @@ doc"""
 > returns vector of generators of `G`, as its elements.
 
 """
-gens(G::FPGroup) = [G(g) for g in G.gens]
+gens(G::AbstractFPGroup) = [G(g) for g in G.gens]
 
 ###############################################################################
 #