diff --git a/src/array_partition.jl b/src/array_partition.jl
index 6d887d7b..62cd9948 100644
--- a/src/array_partition.jl
+++ b/src/array_partition.jl
@@ -169,7 +169,7 @@ Base.any(f, A::ArrayPartition) = any(f, (any(f, x) for x in A.x))
 Base.any(f::Function, A::ArrayPartition) = any(f, (any(f, x) for x in A.x))
 Base.any(A::ArrayPartition) = any(identity, A)
 Base.all(f, A::ArrayPartition) = all(f, (all(f, x) for x in A.x))
-Base.all(f::Function, A::ArrayPartition) = all(f, (all(f, x) for x in A.x))
+Base.all(f::Function, A::ArrayPartition) = all((all(f, x) for x in A.x))
 Base.all(A::ArrayPartition) = all(identity, A)
 
 function Base.copyto!(dest::AbstractArray, A::ArrayPartition)
diff --git a/test/partitions_test.jl b/test/partitions_test.jl
index 70e4e13e..cb706638 100644
--- a/test/partitions_test.jl
+++ b/test/partitions_test.jl
@@ -243,6 +243,7 @@ end
     @test zero(a) == ArrayPartition(zeros(Int, 0, 0), zeros(Float32, 0, 0))
 end
 
+@test !iszero(ArrayPartition([2], [3, 4]))
 @testset "Cartesian indexing" begin
     @test ArrayPartition([1,2], [3])[1:3,1] == [1, 2, 3]
 end