diff --git a/src/TensorValues.jl b/src/TensorValues.jl
index c2e6bb5..0d9f33b 100644
--- a/src/TensorValues.jl
+++ b/src/TensorValues.jl
@@ -9,6 +9,7 @@ export VectorValue
 
 export inner, outer, meas
 export det, inv
+export mutable
 
 import Base: show
 import Base: zero, one
diff --git a/src/Types.jl b/src/Types.jl
index 1c59edf..3601d32 100644
--- a/src/Types.jl
+++ b/src/Types.jl
@@ -209,3 +209,7 @@ function show(io::IO,::MIME"text/plain",v::MultiValue)
   print(io,v.array.data)
 end
 
+# Misc
+
+mutable(::Type{MultiValue{S,T,N,L}}) where {S,T,N,L} = MArray{S,T,N,L}
+
diff --git a/test/TypesTests.jl b/test/TypesTests.jl
index a5d8ead..4873bda 100644
--- a/test/TypesTests.jl
+++ b/test/TypesTests.jl
@@ -245,4 +245,12 @@ v = MultiValue{Tuple{3,2},Float64}(1,2,3,4,5,6)
 s = "(1.0, 2.0, 3.0, 4.0, 5.0, 6.0)"
 @test string(v) == s
 
+# Misc
+
+M = mutable(VectorValue{3,Int})
+@test M == MVector{3,Int}
+m = zero(M)
+v = VectorValue(m)
+@test isa(v,VectorValue{3,Int})
+
 end # module TypesTests