diff --git a/test/CMakeTests.cmake b/test/CMakeTests.cmake
index 132ecae610c..feda52ce2fc 100644
--- a/test/CMakeTests.cmake
+++ b/test/CMakeTests.cmake
@@ -906,7 +906,7 @@ if (BUILD_SHARED_LIBS)
 
   add_test (NAME H5PLUGIN-filter_plugin COMMAND ${CMAKE_CROSSCOMPILING_EMULATOR} $<TARGET_FILE:filter_plugin>)
   set_tests_properties (H5PLUGIN-filter_plugin PROPERTIES
-      ENVIRONMENT "HDF5_PLUGIN_PATH=${CMAKE_BINARY_DIR}/filter_plugin_dir1${CMAKE_SEP}${CMAKE_BINARY_DIR}/filter_plugin_dir2;srcdir=${HDF5_TEST_BINARY_DIR}"
+      ENVIRONMENT "HDF5_PLUGIN_PATH=${CMAKE_BINARY_DIR}/filter_plugin_dir1${CMAKE_SEP}${CMAKE_BINARY_DIR}/filter_plugin_dir2${CMAKE_SEP};HDF5_VOL_CONNECTOR=;srcdir=${HDF5_TEST_BINARY_DIR}"
       WORKING_DIRECTORY ${HDF5_TEST_BINARY_DIR}
   )
   if ("H5PLUGIN-filter_plugin" MATCHES "${HDF5_DISABLE_TESTS_REGEX}")
@@ -1005,7 +1005,7 @@ if (BUILD_SHARED_LIBS)
 
   add_test (NAME H5PLUGIN-vol_plugin COMMAND ${CMAKE_CROSSCOMPILING_EMULATOR} $<TARGET_FILE:vol_plugin>)
   set_tests_properties (H5PLUGIN-vol_plugin PROPERTIES
-      ENVIRONMENT "HDF5_PLUGIN_PATH=${CMAKE_BINARY_DIR}/null_vol_plugin_dir;srcdir=${HDF5_TEST_BINARY_DIR}"
+      ENVIRONMENT "HDF5_PLUGIN_PATH=${CMAKE_BINARY_DIR}/null_vol_plugin_dir;srcdir=${HDF5_TEST_BINARY_DIR};HDF5_VOL_CONNECTOR="
       WORKING_DIRECTORY ${HDF5_TEST_BINARY_DIR}
   )
   if ("H5PLUGIN-vol_plugin" MATCHES "${HDF5_DISABLE_TESTS_REGEX}")