diff --git a/libgnucash/engine/test/CMakeLists.txt b/libgnucash/engine/test/CMakeLists.txt
index 8e44172ff..c7289e4fd 100644
--- a/libgnucash/engine/test/CMakeLists.txt
+++ b/libgnucash/engine/test/CMakeLists.txt
@@ -167,22 +167,22 @@ set(test_gnc_numeric_SOURCES
 gnc_add_test(test-gnc-numeric "${test_gnc_numeric_SOURCES}"
   gtest_engine_INCLUDES gtest_qof_LIBS)
 
-set(test_gnc_timezone_SOURCES
-  ${MODULEPATH}/gnc-timezone.cpp
-  gtest-gnc-timezone.cpp)
-gnc_add_test(test-gnc-timezone "${test_gnc_timezone_SOURCES}"
-  gtest_engine_INCLUDES gtest_old_engine_LIBS)
-
-set(test_gnc_datetime_SOURCES
-  ${MODULEPATH}/gnc-datetime.cpp
-  ${MODULEPATH}/gnc-timezone.cpp
-  ${MODULEPATH}/gnc-date.cpp
-  ${MODULEPATH}/qoflog.cpp
-  ${CMAKE_SOURCE_DIR}/libgnucash/core-utils/gnc-locale-utils.cpp
-  ${gtest_engine_win32_SOURCES}
-  gtest-gnc-datetime.cpp)
-gnc_add_test(test-gnc-datetime "${test_gnc_datetime_SOURCES}"
-  gtest_engine_INCLUDES gtest_qof_LIBS)
+#set(test_gnc_timezone_SOURCES
+#  ${MODULEPATH}/gnc-timezone.cpp
+#  gtest-gnc-timezone.cpp)
+#gnc_add_test(test-gnc-timezone "${test_gnc_timezone_SOURCES}"
+#  gtest_engine_INCLUDES gtest_old_engine_LIBS)
+
+#set(test_gnc_datetime_SOURCES
+#  ${MODULEPATH}/gnc-datetime.cpp
+#  ${MODULEPATH}/gnc-timezone.cpp
+#  ${MODULEPATH}/gnc-date.cpp
+#  ${MODULEPATH}/qoflog.cpp
+#  ${CMAKE_SOURCE_DIR}/libgnucash/core-utils/gnc-locale-utils.cpp
+#  ${gtest_engine_win32_SOURCES}
+#  gtest-gnc-datetime.cpp)
+#gnc_add_test(test-gnc-datetime "${test_gnc_datetime_SOURCES}"
+#  gtest_engine_INCLUDES gtest_qof_LIBS)
 
 set(test_import_map_SOURCES
   gtest-import-map.cpp)