diff --git a/README b/README
index 5123c17c408..a2d92c59516 100644
--- a/README
+++ b/README
@@ -60,6 +60,12 @@ Then edit source/nan_definitions.mk to fit you're environment.
 (You'll want to change things like NAN_OPENSSL,NAN_JPEG, NAN_PNG etc.. 
 to point to where you have it installed)
 
+If you want to integrate the game-engine in Blender, you might want
+to uncomment the following line in nan_compile.mk:
+#CFLAGS += -DGAMEBLENDER=1
+The define is disabled by default because there still are still some
+problems with this at the moment.
+
 If you tried to just have a go at making stuff you might wind up with
 an empty file /tmp/.nanguess
 You need to remove the empty file and it will get created automatically
diff --git a/source/nan_compile.mk b/source/nan_compile.mk
index b9bb9d5c0c9..df0fa368446 100644
--- a/source/nan_compile.mk
+++ b/source/nan_compile.mk
@@ -37,6 +37,9 @@ CPPFLAGS ?= $(NAN_CPPFLAGS)
 
 # common parts ---------------------------------------------------
 
+# Uncomment next line to enable integrated game engine
+#CFLAGS += -DGAMEBLENDER=1
+
 ifdef NAN_DEBUG
     CFLAGS += $(NAN_DEBUG)
     CCFLAGS += $(NAN_DEBUG)