diff --git a/Makefile b/Makefile
index a5b048a5..3aaa6fb3 100644
--- a/Makefile
+++ b/Makefile
@@ -86,6 +86,10 @@ clean:
 	rm -rf testing/googletest/build/*
 
 
+PLUGIN_TEST_SUPPORT_DIR ?= $(BOARD_HARDWARE_PATH)/keyboardio/build-tools/
+PLUGIN_TEST_BIN_DIR ?= $(PLUGIN_TEST_SUPPORT_DIR)/../toolchain/$(shell gcc --print-multiarch)/bin
+
+
 prepare-virtual:
 	$(MAKE) -C $(BOARD_HARDWARE_PATH)/keyboardio prepare-virtual