diff --git a/Makefile b/Makefile
index d40ccee..913f40d 100644
--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,5 @@
+.PHONY: help full prng testing uuid core primitives all clean builddir build-test run-test codegen install build-lib ccodegen
+
 # External variables
 CC             = clang
 CXX            = clang++
@@ -29,11 +31,11 @@ override LIB_INSTALL        := $(ABS_INSTALL_PREFIX)/lib
 override HEADER_INSTALL_CMD := scripts/header_install.sh
 
 ifeq ($(BUILD_TYPE),Debug)
-	CFLAGS += -g -fsanitize=address,undefined -DWAPP_DEBUG_ASSERT
+	override CFLAGS += -g -fsanitize=address,undefined -DWAPP_DEBUG_ASSERT
 else ifeq ($(BUILD_TYPE),RelWithDebInfo)
-	CFLAGS += -g -O2 -fsanitize=address,undefined -DWAPP_DEBUG_ASSERT
+	override CFLAGS += -g -O2 -fsanitize=address,undefined -DWAPP_DEBUG_ASSERT
 else ifeq ($(BUILD_TYPE),Release)
-	CFLAGS += -O3
+	override CFLAGS += -O3
 else
 	$(error Invalid BUILD type '$(BUILD_TYPE)'. Use 'Debug', 'RelWithDebInfo' or 'Release')
 endif
@@ -43,8 +45,6 @@ ifeq ($(CC),gcc)
   export ASAN_OPTIONS=verify_asan_link_order=0
 endif
 
-.PHONY: help full prng testing uuid core primitives all clean builddir build-test run-test codegen install build-lib ccodegen
-
 all: clean builddir codegen run-c-test full run-cc-test ccodegen
 
 help: