diff --git a/src/AbstractTypes.jl b/src/AbstractTypes.jl
index fd89b0204..d257b034b 100644
--- a/src/AbstractTypes.jl
+++ b/src/AbstractTypes.jl
@@ -1,7 +1,5 @@
 abstract type Set <: AbstractAlgebra.Set end
 
-abstract type NCRing <: AbstractAlgebra.NCRing end
-
 abstract type Ring <: AbstractAlgebra.Ring end
 
 abstract type Field <: AbstractAlgebra.Field end