1 files changed, 9 insertions, 1 deletions
diff --git a/Makefile b/Makefile
index cab0162..9651c0e 100644
--- a/Makefile
+++ b/Makefile
@@ -155,9 +155,17 @@ install-plugins:
 		install -m 644 plugins/$$PLUGIN $(DESTDIR)$(INST_ROOT)/lib/gitano/plugins; \
 	done
 
+YARN_ARGS :=
+ifneq ($(LUA_PATH),)
+YARN_ARGS += --env LUA_PATH="$(LUA_PATH)"
+endif
+ifneq ($(LUA_CPATH),)
+YARN_ARGS += --env LUA_CPATH="$(LUA_CPATH)"
+endif
+
 test: local $(TEST_BINS)
 	@$(YARN) --env GTT="$$(pwd)/testing/gitano-test-tool"			\
-		 --env LUA_PATH="$(LUA_PATH)" --env LUA_CPATH="$(LUA_CPATH)"    \
+		 $(YARN_ARGS)                                                   \
 	        testing/library.yarn $(TESTS)
 
 testing/%: testing/%.in $(GEN_BIN)