diff --git a/src/tensors/abstracttensor.jl b/src/tensors/abstracttensor.jl
index 823280e07..7f068369a 100644
--- a/src/tensors/abstracttensor.jl
+++ b/src/tensors/abstracttensor.jl
@@ -224,7 +224,8 @@ end
 # tensor characteristics: work on instances and pass to type
 #------------------------------------------------------------
 InnerProductStyle(t::AbstractTensorMap) = InnerProductStyle(typeof(t))
-storagetype(t::AbstractTensorMap) = storagetype(typeof(t))
+storagetype(t) = storagetype(typeof(t))
+storagetype(T::Type) = throw(MethodError(storagetype, T))
 blocktype(t::AbstractTensorMap) = blocktype(typeof(t))
 
 numout(t::AbstractTensorMap) = numout(typeof(t))
diff --git a/src/tensors/sectorvector.jl b/src/tensors/sectorvector.jl
index 8f133b20e..70719f55f 100644
--- a/src/tensors/sectorvector.jl
+++ b/src/tensors/sectorvector.jl
@@ -37,6 +37,7 @@ Base.size(v::SectorVector, args...) = size(parent(v), args...)
 Base.similar(v::SectorVector) = SectorVector(similar(v.data), v.structure)
 Base.similar(v::SectorVector, ::Type{T}) where {T} = SectorVector(similar(v.data, T), v.structure)
 Base.similar(v::SectorVector, V::ElementarySpace) = SectorVector{eltype(v), sectortype(V), storagetype(v)}(undef, V)
+Base.similar(v::SectorVector, ::Type{T}, V::ElementarySpace) where {T} = SectorVector(similar(v.data, T, reduceddim(V)), V)
 
 Base.copy(v::SectorVector) = SectorVector(copy(v.data), v.structure)