diff --git a/test/Project.toml b/test/Project.toml
index af3374c..56efc6c 100644
--- a/test/Project.toml
+++ b/test/Project.toml
@@ -8,3 +8,4 @@ Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 Unitful = "1986cc42-f94f-5a68-af5c-568840ba703d"
 
 [compat]
+ImageGeoms = "0.10"
diff --git a/test/helper.jl b/test/helper.jl
index 99314a6..61e74db 100644
--- a/test/helper.jl
+++ b/test/helper.jl
@@ -10,8 +10,10 @@ end
 =#
 
 
-# fft cannot handle units so this is a work-around
-function myfft(x::AbstractArray{<:Number})
-    u = oneunit(eltype(x))
-    return fftshift(fft(ifftshift(x) / u)) * u
+if !@isdefined myfft
+    # fft cannot handle units so this is a work-around
+    function myfft(x::AbstractArray{<:Number})
+        u = oneunit(eltype(x))
+        return fftshift(fft(ifftshift(x) / u)) * u
+    end
 end
diff --git a/test/shape2.jl b/test/shape2.jl
index e743b0f..2a938c7 100644
--- a/test/shape2.jl
+++ b/test/shape2.jl
@@ -13,6 +13,7 @@ using ImageGeoms: ImageGeom, axesf
 using FFTW: fft, fftshift, ifftshift
 using Test: @test, @testset, @inferred
 
+include("helper.jl") # myfft
 
 @testset "circle-square" begin # special constructors
     args = [(1, 5.0f0), (1, 2, 3., 5.0f0), ((1, 2), 3., 5.0f0)]
@@ -178,7 +179,7 @@ end
 
   @testset "spectrum" begin
     (M,N) = (2^10,2^10+5) # odd
-    ig = ImageGeom( dims=(M,N), deltas=(0.02m, 0.025m), offsets=:dsp)
+    ig = ImageGeom(; dims=(M,N), deltas=(0.02m, 0.025m), offsets=:dsp)
     ob = shape((2m, -3m), swidth, π/6, 1.0f0)
     zscale = 1 / (ob.value * IP.area(ob)) # normalize spectra by area