diff --git a/ChangeLog b/ChangeLog
index 270b85761..36eef8c21 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2008-04-13 Holger Vogt
+ * src/include/bool.h: BOOLEAN definition added again  
+   src/spicelib/devices/dev.c: #undef BOOLEAN added
+   
 2008-04-05 Dietmar Warning
  * src/frontend/inpcom.c: define the missing buffer nam_buf for mos devices
  * src/misc/string.c, stringutil.h: moving some string functions from inpcom.c
diff --git a/src/include/bool.h b/src/include/bool.h
index 80e7030a9..8744cb49d 100644
--- a/src/include/bool.h
+++ b/src/include/bool.h
@@ -3,6 +3,7 @@
 
 typedef unsigned char bool;
 
+#define BOOLEAN int
 #define TRUE  1
 #define FALSE 0
 #define NO    0
diff --git a/src/spicelib/devices/dev.c b/src/spicelib/devices/dev.c
index 4f0b9d67e..eb973b6e5 100644
--- a/src/spicelib/devices/dev.c
+++ b/src/spicelib/devices/dev.c
@@ -45,6 +45,7 @@
 #if (!defined HAS_WINDOWS) && (!defined __MINGW32__)
 #include <dlfcn.h> /* to load libraries*/
 #else /* ifdef HAS_WINDOWS */
+#undef BOOLEAN
 #include <windows.h>
 #ifdef HAS_WINDOWS
 #include "wstdio.h"