--- a/include/Scintilla.h
+++ b/include/Scintilla.h
@@ -382,6 +382,7 @@
 #define SCI_POSITIONFROMLINE 2167
 #define SCI_LINESCROLL 2168
 #define SCI_SCROLLCARET 2169
+#define SCI_SCROLLRANGE 2569
 #define SCI_REPLACESEL 2170
 #define SCI_SETREADONLY 2171
 #define SCI_NULL 2172