diff --git a/test/runtests.jl b/test/runtests.jl
index 97ccc86d..26397a61 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -9,8 +9,8 @@ println("Optimizer version: $(Xpress.get_version())")
     "xprs_callbacks",
     "Derivative",
 ]
-    @testset "$(file)" for file in readdir(folder)
-        include(joinpath(folder, file))
+    @testset "$(file)" for file in readdir(joinpath(@__DIR__, folder))
+        include(joinpath(@__DIR__, folder, file))
     end
 end