diff --git a/src/meson.build b/src/meson.build
index a6eb6ba..e0867c4 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -2,10 +2,10 @@
 subdir('resources')
 
 # Build the main source code
+subdir('config')
 subdir('dobj')
 subdir('const')
 subdir('opatIO')
 subdir('meshIO')
 subdir('probe')
 subdir('poly')
-subdir('config')
diff --git a/tests/meshIO/meson.build b/tests/meshIO/meson.build
index 6db5297..6b4cdb4 100644
--- a/tests/meshIO/meson.build
+++ b/tests/meshIO/meson.build
@@ -18,5 +18,8 @@ foreach test_file : test_sources
   )
 
   # Add the executable as a test
-  test(exe_name, test_exe)
+  test(
+    exe_name,
+    test_exe,
+    env: ['MESON_SOURCE_ROOT=' + meson.project_source_root(), 'MESON_BUILD_ROOT=' + meson.project_build_root()])
 endforeach
diff --git a/tests/poly/meson.build b/tests/poly/meson.build
index 81c3b62..995982d 100644
--- a/tests/poly/meson.build
+++ b/tests/poly/meson.build
@@ -16,5 +16,8 @@ foreach test_file : test_sources
   )
 
   # Add the executable as a test
-  test(exe_name, test_exe)
+  test(
+    exe_name,
+    test_exe,
+    env: ['MESON_SOURCE_ROOT=' + meson.project_source_root(), 'MESON_BUILD_ROOT=' + meson.project_build_root()])
 endforeach