diff --git a/vulkan-triangle/Makefile b/vulkan-triangle/Makefile
index 6d0feee..e27ded3 100644
--- a/vulkan-triangle/Makefile
+++ b/vulkan-triangle/Makefile
@@ -20,6 +20,7 @@ $(TARGET): main.c vert.spv frag.spv \
 		`pkg-config --libs --cflags xcb` \
 		-L $(VULKAN_SO_PATH) \
 		-l$(VULKAN_SO_NAME) \
+		-DVK_USE_PLATFORM_XCB_KHR \
 		-o $(TARGET) \
 		common/vk-api.c \
 		main.c
diff --git a/vulkan-triangle/main.c b/vulkan-triangle/main.c
index 985f6a1..2dde8f9 100644
--- a/vulkan-triangle/main.c
+++ b/vulkan-triangle/main.c
@@ -31,7 +31,7 @@
 #include <unistd.h>
 #include <xcb/xcb.h>
 
-#define VK_USE_PLATFORM_XCB_KHR
+/* 'VK_USE_PLATFORM_X_KHR' currently defined as flag in Makefile */
 #include <vulkan/vulkan.h>
 #include "common/vk-api.h"