diff --git a/fem/tests/mgdyn_bh_gauge2/CMakeLists.txt b/fem/tests/mgdyn_bh_gauge2/CMakeLists.txt
index b623e3111f..7341642af8 100644
--- a/fem/tests/mgdyn_bh_gauge2/CMakeLists.txt
+++ b/fem/tests/mgdyn_bh_gauge2/CMakeLists.txt
@@ -1,4 +1,4 @@
 INCLUDE(test_macros)
 CONFIGURE_FILE(block.sif block.sif COPYONLY)
 file(COPY ELMERSOLVER_STARTINFO mesh_tet HB DESTINATION "${CMAKE_CURRENT_BINARY_DIR}/")
-ADD_ELMER_TEST(mgdyn_bh_gauge2 LABELS whitney gauge block)
+ADD_ELMER_TEST(mgdyn_bh_gauge2 LABELS whitney gauge block slow)