diff --git a/unit_tests/unit_test_rules.mk b/unit_tests/unit_test_rules.mk
index cc93f51730..137d2b9751 100644
--- a/unit_tests/unit_test_rules.mk
+++ b/unit_tests/unit_test_rules.mk
@@ -56,6 +56,8 @@ USE_OPT += -DEFI_UNIT_TEST=1 -DEFI_PROD_CODE=0 -DEFI_SIMULATOR=0
 # Pretend we are all different hardware so that all canned engine configs are included
 USE_OPT += -DHW_MICRO_RUSEFI=1 -DHW_PROTEUS=1 -DHW_FRANKENSO=1 -DHW_HELLEN=1
 
+DDEFS += -DSHORT_BOARD_NAME=f407-discovery
+
 ifeq ($(CCACHE_DIR),)
  $(info No CCACHE_DIR)
 else