diff --git a/etc/makefiles/sketch.mk b/etc/makefiles/sketch.mk
index a64635e3..e1dacb5e 100644
--- a/etc/makefiles/sketch.mk
+++ b/etc/makefiles/sketch.mk
@@ -121,7 +121,7 @@ hex-with-bootloader: ${HEX_FILE_PATH}
 	@echo And TEST THIS ON REAL HARDWARE BEFORE YOU GIVE IT TO ANYONE.
 
 clean:
-	rm -rf -- "${OUTPUT_PATH}/*"
+	rm -rf -- "${OUTPUT_PATH}"/*
 
 
 ifneq ($(LOCAL_CFLAGS),)
diff --git a/tests/Makefile b/tests/Makefile
index dea344c1..befa46b1 100644
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -31,19 +31,19 @@ run-all: ${TESTS}
 	done || exit 1
 
 cmake-clean:
-	rm -rf "${top_dir}/testing/googletest/build/*"
+	rm -rf "${top_dir}"/testing/googletest/build/*
 
 clean: cmake-clean
 	@for test in ${TESTS}; do \
 		${MAKE} -s -f ${top_dir}/testing/makefiles/testcase.mk -C $${test} testcase=$${test} clean; \
 	done
-
-	rm -rf "${build_dir}/*"
+	rm -rf "${build_dir}"/*
 
 googletest: ${top_dir}/testing/googletest/build/Makefile
 	cd ${top_dir}/testing/googletest/build && $(MAKE)
 
 ${top_dir}/testing/googletest/build/Makefile:
+	$(info googletest Makefile is being remade)
 	install -d ${top_dir}/testing/googletest/build && cd ${top_dir}/testing/googletest/build && cmake ..
 
 ${libcommon_a}: