diff --git a/Readme.md b/Readme.md
index 9330317..3325c64 100644
--- a/Readme.md
+++ b/Readme.md
@@ -1,4 +1,4 @@
-PinChangeInterrupt Library 1.2.5
+PinChangeInterrupt Library 1.2.6
 ================================
 
 ![Header Picture](header.png)
@@ -280,6 +280,9 @@ the new PinChangeInterrupts may help you a lot.
 Version History
 ===============
 ```
+1.2.6 Release (10.02.2018)
+* Fix makefile compilation problems
+
 1.2.5 Release (02.09.2017)
 * Fixed makefile compilation
 * Added support to disable pcint/port via -DPCINT_DISABLE_PORT0 etc.
@@ -338,7 +341,7 @@ License and Copyright
 If you use this library for any cool project let me know!
 
 ```
-Copyright (c) 2014-2015 NicoHood
+Copyright (c) 2014-2018 NicoHood
 See the readme for credit to other people.
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
diff --git a/library.properties b/library.properties
index fddfd27..7b5b8ba 100644
--- a/library.properties
+++ b/library.properties
@@ -1,5 +1,5 @@
 name=PinChangeInterrupt
-version=1.2.4
+version=1.2.6
 author=NicoHood
 maintainer=NicoHood <blog@NicoHood.de>
 sentence=A simple & compact PinChangeInterrupt library for Arduino.
diff --git a/src/PinChangeInterrupt.h b/src/PinChangeInterrupt.h
index b45267e..ac51345 100644
--- a/src/PinChangeInterrupt.h
+++ b/src/PinChangeInterrupt.h
@@ -1,5 +1,5 @@
 /*
-Copyright (c) 2014-2017 NicoHood
+Copyright (c) 2014-2018 NicoHood
 See the readme for credit to other people.
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
@@ -25,7 +25,7 @@ THE SOFTWARE.
 #pragma once
 
 // Software Version
-#define PCINT_VERSION 125
+#define PCINT_VERSION 126
 
 #include <avr/io.h>
 #include <avr/interrupt.h>
@@ -38,13 +38,19 @@ THE SOFTWARE.
 #endif
 
 #else
-enum pcint_mode_t
-{
-    LOW     = 0,
-    CHANGE  = 1,
-    FALLING = 2,
-    RISING  = 3,
-};
+
+#ifndef LOW
+#define LOW 0x0
+#endif
+#ifndef CHANGE
+#define CHANGE 0x1
+#endif
+#ifndef FALLING
+#define FALLING 0x2
+#endif
+#ifndef RISING
+#define RISING 0x3
+#endif
 
 #endif