diff --git a/doc/general.texi b/doc/general.texi
index 514e8e53523c945df05f7cc47bf75b27fbc9c218..879dead847d327cada1d8f10a9104c98d022bb43 100644
--- a/doc/general.texi
+++ b/doc/general.texi
@@ -669,7 +669,7 @@ implementation in MinGW.
 Just install your Cygwin with all the "Base" packages, plus the
 following "Devel" ones:
 @example
-binutils, gcc-core, make, subversion, mingw-runtime
+binutils, gcc-core, make, subversion, mingw-runtime, diffutils
 @end example
 
 Do not install binutils-20060709-1 (they are buggy on shared builds);