diff --git a/CMakeLists.txt b/CMakeLists.txt
index fa96674dd25..2c9c59a31f8 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -19,11 +19,6 @@ endif()
 # don't relink it only the shared object changes
 set(CMAKE_LINK_DEPENDS_NO_SHARED ON)
 
-# This needs to be set before any add_directory in order to be visible
-# by the subdirectories
-set(QGIS_TEST_TMP_DIR "${CMAKE_BINARY_DIR}/tmp")
-message (STATUS "Ctest Temp Directory set to: ${QGIS_TEST_TMP_DIR}")
-
 #############################################################
 # Project and version
 set(CPACK_PACKAGE_VERSION_MAJOR "3")
diff --git a/cmake/UsePythonTest.cmake b/cmake/UsePythonTest.cmake
index 18593162ca9..874d22c3a64 100644
--- a/cmake/UsePythonTest.cmake
+++ b/cmake/UsePythonTest.cmake
@@ -77,9 +77,6 @@ macro(ADD_PYTHON_TEST TESTNAME FILENAME)
     set_tests_properties(${TESTNAME} PROPERTIES TIMEOUT ${TEST_TIMEOUT})
   endif()
 
-  set_tests_properties(${TESTNAME} PROPERTIES
-      FIXTURES_REQUIRED SOURCETREE
-      ENVIRONMENT "TMPDIR=${QGIS_TEST_TMP_DIR};QGIS_CUSTOM_CONFIG_PATH=${QGIS_TEST_TMP_DIR}/config"
-  )
+  set_tests_properties(${TESTNAME} PROPERTIES FIXTURES_REQUIRED SOURCETREE)
 
 endmacro(ADD_PYTHON_TEST)
diff --git a/tests/src/CMakeLists.txt b/tests/src/CMakeLists.txt
index 92f88aec1eb..a653575ad4d 100644
--- a/tests/src/CMakeLists.txt
+++ b/tests/src/CMakeLists.txt
@@ -26,11 +26,7 @@ if (ENABLE_TESTS)
       set_tests_properties(${TESTNAME} PROPERTIES LABELS ${ARG_QGIS_TEST_LABELS})
     endif()
 
-    set_tests_properties(${TESTNAME} PROPERTIES
-      FIXTURES_REQUIRED SOURCETREE
-      ENVIRONMENT "TMPDIR=${QGIS_TEST_TMP_DIR};QGIS_CUSTOM_CONFIG_PATH=${QGIS_TEST_TMP_DIR}/config"
-    )
-
+    set_tests_properties(${TESTNAME} PROPERTIES FIXTURES_REQUIRED SOURCETREE)
     target_compile_definitions(${TESTNAME} PRIVATE "CMAKE_SOURCE_DIR=\"${CMAKE_SOURCE_DIR}\"")
   endmacro()