diff --git a/winsup/w32api/ChangeLog b/winsup/w32api/ChangeLog
index 1d8225dd4..73002c0df 100644
--- a/winsup/w32api/ChangeLog
+++ b/winsup/w32api/ChangeLog
@@ -1,3 +1,8 @@
+2003-03-12  Ranjit Mathew  <rmathew@hotmail.com>
+
+        * include/winnt.h (_IMAGE_SEPARATE_DEBUG_HEADER): Expose
+        member SectionAlignment.
+
 2003-03-11  Earnie Boyd  <earnie@users.sf.net>
 
 	* include/winsvc.h (SERVICE_NO_CHANGE): Use hex constant to avoid
diff --git a/winsup/w32api/include/winnt.h b/winsup/w32api/include/winnt.h
index 8aa71c637..b1ad9f7cc 100644
--- a/winsup/w32api/include/winnt.h
+++ b/winsup/w32api/include/winnt.h
@@ -2578,7 +2578,8 @@ typedef struct _IMAGE_SEPARATE_DEBUG_HEADER {
 	DWORD NumberOfSections;
 	DWORD ExportedNamesSize;
 	DWORD DebugDirectorySize;
-	DWORD Reserved[3];
+	DWORD SectionAlignment;
+	DWORD Reserved[2];
 } IMAGE_SEPARATE_DEBUG_HEADER,*PIMAGE_SEPARATE_DEBUG_HEADER;
 #pragma pack(pop)
 typedef enum _CM_SERVICE_NODE_TYPE {