diff --git a/include/IrrCompileConfig.h b/include/IrrCompileConfig.h
index 1a638b0..17786bb 100644
--- a/include/IrrCompileConfig.h
+++ b/include/IrrCompileConfig.h
@@ -5,6 +5,10 @@
 #ifndef __IRR_COMPILE_CONFIG_H_INCLUDED__
 #define __IRR_COMPILE_CONFIG_H_INCLUDED__
 
+//! Identifies Irrlicht fork customized for the Minetest engine
+#define IRRLICHT_VERSION_MT_REVISION 0
+#define IRRLICHT_VERSION_MT "mt0"
+
 //! Irrlicht SDK Version
 #define IRRLICHT_VERSION_MAJOR 1
 #define IRRLICHT_VERSION_MINOR 9
@@ -12,7 +16,7 @@
 // This flag will be defined only in SVN, the official release code will have
 // it undefined
 #define IRRLICHT_VERSION_SVN alpha
-#define IRRLICHT_SDK_VERSION "1.9.0"
+#define IRRLICHT_SDK_VERSION "1.9.0" IRRLICHT_VERSION_MT
 
 #include <stdio.h> // TODO: Although included elsewhere this is required at least for mingw