From 7517f1e2bf206a201688a8201f264a1447a1af2f Mon Sep 17 00:00:00 2001
From: Thomas Klaehn <thomas.klaehn@perinet.io>
Date: Mon, 22 Jul 2019 16:08:41 +0200
Subject: [PATCH] Fix Makefile

---
 Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index b1129be..45e39ec 100644
--- a/Makefile
+++ b/Makefile
@@ -22,7 +22,7 @@ PREFIX ?= /usr
 LIB_INSTALL_DIR ?= $(PREFIX)/lib/$(TARGET_FILE)
 INC_INSTALL_DIR ?= $(PREFIX)/include/lib$(TARGET_FILE)
 
-INCLUDES := inc
+INCLUDES += inc
 INCLUDES += $(PREFIX)/include/
 
 ifneq "$(findstring $(MAKECMDGOALS), build_unit_test exec_unit_test coverage)" ""