diff --git a/winsup/w32api/ChangeLog b/winsup/w32api/ChangeLog
index b69dfa748..70d19a966 100644
--- a/winsup/w32api/ChangeLog
+++ b/winsup/w32api/ChangeLog
@@ -1,3 +1,8 @@
+2005-07-20  Danny Smith  <dannysmith@users.sourceforge.net>
+
+	* include/wingdi.h (TT_PRIM_CSPLINE): Define.
+	Thanks to: Bob Jamison <ishmal at users dot sourceforge dot net>
+
 2005-07-20  Danny Smith  <dannysmith@users.sourceforge.net>
 
 	* include/richedit.h (SETTEXTEX): Define structure and
diff --git a/winsup/w32api/include/wingdi.h b/winsup/w32api/include/wingdi.h
index 6f8d0ad1a..daaa35b51 100644
--- a/winsup/w32api/include/wingdi.h
+++ b/winsup/w32api/include/wingdi.h
@@ -1140,6 +1140,7 @@ extern "C" {
 #define TT_POLYGON_TYPE 24
 #define TT_PRIM_LINE 1
 #define TT_PRIM_QSPLINE 2
+#define TT_PRIM_CSPLINE 3 
 #define FONTMAPPER_MAX 10
 #define ENHMETA_STOCK_OBJECT 0x80000000
 #define WGL_FONT_LINES 0