diff --git a/ctest.cmake b/ctest.cmake
index 81838375d..7e58794ed 100644
--- a/ctest.cmake
+++ b/ctest.cmake
@@ -20,5 +20,9 @@ ctest_start("Continuous")
 ctest_update()
 ctest_configure(OPTIONS -DPHRQC_TESTING:BOOL=ON)
 ctest_build()
-ctest_test()
+if(${CMAKE_VERSION} VERSION_LESS "3.29")
+  ctest_test(PARALLEL_LEVEL 2)
+else()
+  ctest_test(PARALLEL_LEVEL)
+endif()
 ctest_submit()
diff --git a/mytest/NH4_2_SO4 b/mytest/NH4_2_SO4
index 0887d1e45..5246e555f 100644
--- a/mytest/NH4_2_SO4
+++ b/mytest/NH4_2_SO4
@@ -2,7 +2,7 @@
 #PRINT; -reset false
 database ../database/Amm.dat
 SELECTED_OUTPUT 101
-    -file                 NH4_2SO4_101.sel
+    -file                 NH4_2_SO4_101.sel
 USER_PUNCH 101
     -headings Mu SC
     -start
diff --git a/mytest/(NH4)2SO4_101.sel b/mytest/NH4_2_SO4_101.sel
similarity index 100%
rename from mytest/(NH4)2SO4_101.sel
rename to mytest/NH4_2_SO4_101.sel