diff --git a/test/c++/CMakeLists.txt b/test/c++/CMakeLists.txt
index 4f31f316..86ccb533 100644
--- a/test/c++/CMakeLists.txt
+++ b/test/c++/CMakeLists.txt
@@ -1,4 +1,5 @@
 # Build googletest
+set(PYTHON_EXECUTABLE ${TRIQS_PYTHON_EXECUTABLE})
 add_subdirectory(gtest EXCLUDE_FROM_ALL)
 
 # Copy h5 files to binary dir
diff --git a/test/python/CMakeLists.txt b/test/python/CMakeLists.txt
index 4f6bdcb9..aa9d877e 100644
--- a/test/python/CMakeLists.txt
+++ b/test/python/CMakeLists.txt
@@ -10,6 +10,6 @@ set(all_tests Basic)
 foreach(test ${all_tests})
   get_filename_component(test_name ${test} NAME_WE)
   get_filename_component(test_dir ${test} DIRECTORY)
-  add_test(NAME Py_${test_name} COMMAND ${TRIQS_PYTHON_INTERPRETER} ${CMAKE_CURRENT_SOURCE_DIR}/${test_dir}/${test_name}.py WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/${test_dir})
+  add_test(NAME Py_${test_name} COMMAND ${TRIQS_PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/${test_dir}/${test_name}.py WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/${test_dir})
   set_property(TEST Py_${test_name} APPEND PROPERTY ENVIRONMENT PYTHONPATH=${PROJECT_BINARY_DIR}/python:$ENV{PYTHONPATH} ${SANITIZER_RT_PRELOAD})
 endforeach()