diff --git a/Project.toml b/Project.toml
index feb52e0..2207a08 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "TensorAlgebra"
 uuid = "68bd88dc-f39d-4e12-b2ca-f046b68fcc6a"
 authors = ["ITensor developers <support@itensor.org> and contributors"]
-version = "0.6.0"
+version = "0.6.1"
 
 [deps]
 ArrayLayouts = "4c555306-a7a7-4459-81d9-ec55ddd5c99a"
diff --git a/src/blockarrays.jl b/src/blockarrays.jl
index 0b8dbc2..056fcac 100644
--- a/src/blockarrays.jl
+++ b/src/blockarrays.jl
@@ -13,7 +13,7 @@ end
 function tensor_product_axis(
         ::BlockReshapeFusion, r1::AbstractUnitRange, r2::AbstractUnitRange
     )
-    isone(first(r1)) || isone(first(r2)) ||
+    (isone(first(r1)) && isone(first(r2))) ||
         throw(ArgumentError("Only one-based axes are supported"))
     blockaxpairs = Iterators.product(eachblockaxes1(r1), eachblockaxes1(r2))
     blockaxs = vec(map(splat(tensor_product_axis), blockaxpairs))
diff --git a/src/matricize.jl b/src/matricize.jl
index e532300..200af43 100644
--- a/src/matricize.jl
+++ b/src/matricize.jl
@@ -259,7 +259,7 @@ struct ReshapeFusion <: FusionStyle end
 FusionStyle(::Type{<:AbstractArray}) = ReshapeFusion()
 trivial_axis(::ReshapeFusion, a::AbstractArray) = Base.OneTo(1)
 function tensor_product_axis(::ReshapeFusion, r1::AbstractUnitRange, r2::AbstractUnitRange)
-    isone(first(r1)) || isone(first(r2)) ||
+    (isone(first(r1)) && isone(first(r2))) ||
         throw(ArgumentError("Only one-based axes are supported"))
     return Base.OneTo(length(r1) * length(r2))
 end