diff --git a/winsup/w32api/ChangeLog b/winsup/w32api/ChangeLog
index 990fcd3a3..bd8b01eb2 100644
--- a/winsup/w32api/ChangeLog
+++ b/winsup/w32api/ChangeLog
@@ -1,3 +1,7 @@
+2006-03-26  Chris Sutcliffe <ir0nh34d@users.sourceforge.net>
+
+    * include/winbase.h (SetProcessWorkingSetSize): Corrected define.
+
 2006-03-26  Hansres Engel  <engel@node.ch>
 
          Add Uniscribe API for typography and for complex scripts.
diff --git a/winsup/w32api/include/winbase.h b/winsup/w32api/include/winbase.h
index 2de0b127e..69fc41e42 100644
--- a/winsup/w32api/include/winbase.h
+++ b/winsup/w32api/include/winbase.h
@@ -1856,7 +1856,7 @@ WINBASEAPI BOOL WINAPI SetPrivateObjectSecurity(SECURITY_INFORMATION,PSECURITY_D
 WINBASEAPI BOOL WINAPI SetProcessAffinityMask(HANDLE,DWORD);
 WINBASEAPI BOOL WINAPI SetProcessPriorityBoost(HANDLE,BOOL);
 WINBASEAPI BOOL WINAPI SetProcessShutdownParameters(DWORD,DWORD);
-WINBASEAPI BOOL WINAPI SetProcessWorkingSetSize(HANDLE,DWORD,DWORD);
+WINBASEAPI BOOL WINAPI SetProcessWorkingSetSize(HANDLE,SIZE_T,SIZE_T);
 WINBASEAPI BOOL WINAPI SetSecurityDescriptorControl(PSECURITY_DESCRIPTOR,SECURITY_DESCRIPTOR_CONTROL,SECURITY_DESCRIPTOR_CONTROL);
 WINBASEAPI BOOL WINAPI SetSecurityDescriptorDacl(PSECURITY_DESCRIPTOR,BOOL,PACL,BOOL);
 WINBASEAPI BOOL WINAPI SetSecurityDescriptorGroup(PSECURITY_DESCRIPTOR,PSID,BOOL);