diff --git a/src/VisualRegressionTests.jl b/src/VisualRegressionTests.jl
index a81851d..545ed93 100644
--- a/src/VisualRegressionTests.jl
+++ b/src/VisualRegressionTests.jl
@@ -6,6 +6,7 @@ using ImageBase
 using ImageDistances
 using ImageFiltering
 
+const path = mktempdir()
 # ---------------------------------------------
 
 struct VisualTest
@@ -18,7 +19,7 @@ struct VisualTest
 end
 
 function VisualTest(testFunction::Function, refFilename::AbstractString, args...; kw...)
-    VisualTest(tempname() * ".png", testFunction, args, kw, refFilename)
+    VisualTest(joinpath(path, tempname() * ".png"), testFunction, args, kw, refFilename)
 end
 
 # ---------------------------------------------
diff --git a/src/macros.jl b/src/macros.jl
index 5ddca36..e7ffd4c 100644
--- a/src/macros.jl
+++ b/src/macros.jl
@@ -1,6 +1,6 @@
 macro visualtest(testfun, refname, popup=true, tol=1e-3)
   esc(quote
-    testFilename = tempname()*".png"
+    testFilename = joinpath($path, tempname() * ".png")
     $testfun(testFilename)
     @test test_images(testFilename, $refname, popup=$popup, tol=$tol) |> success
   end)
@@ -8,7 +8,7 @@ end
 
 macro plottest(plotfun, refname, popup=true, tol=1e-3)
   esc(quote
-    testFilename = tempname()*".png"
+    testFilename = joinpath($path, tempname() * ".png")
     if $plotfun isa Function
       $plotfun()
     else # function body
diff --git a/test/runtests.jl b/test/runtests.jl
index 8d870db..ac8173b 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -8,7 +8,7 @@ import FileIO, TestImages
 img = TestImages.testimage("cameraman")
 
 # save a temporary copy
-reffn = tempname() * ".png"
+reffn = joinpath(path, tempname() * ".png")
 FileIO.save(reffn, img)
 
 # this is the test function, which saves an image to the given location