diff --git a/sim/ppc/ChangeLog b/sim/ppc/ChangeLog
index 0196fe68ab..f9bf0b7f61 100644
--- a/sim/ppc/ChangeLog
+++ b/sim/ppc/ChangeLog
@@ -1,3 +1,8 @@
+2006-01-23  Mark Mitchell  <mark@codesourcery.com>
+
+	* words.h (signed32): Define as "int".
+	(unsigned32): Define as "unsigned int".
+
 2005-11-28 Mark Mitchell  <mark@codesourcery.com>
 
 	* configure.ac (USE_WIN32API): Define it.
diff --git a/sim/ppc/words.h b/sim/ppc/words.h
index 5bf2490780..269fd4e43f 100644
--- a/sim/ppc/words.h
+++ b/sim/ppc/words.h
@@ -55,11 +55,11 @@ typedef long natural32;
 
 typedef signed char signed8;
 typedef signed short signed16;
-typedef signed long signed32;
+typedef signed int signed32;
 
 typedef unsigned char unsigned8;
 typedef unsigned short unsigned16;
-typedef unsigned long unsigned32;
+typedef unsigned int unsigned32;
 
 #ifdef __GNUC__
 typedef long long natural64;