diff --git a/RELEASE_NOTES.txt b/RELEASE_NOTES.txt
index 5a829c2a9c74bff5504d7bfe412dbaf218a32df3..4043b3525a31160b1fb4321008ad2119de322719 100644
--- a/RELEASE_NOTES.txt
+++ b/RELEASE_NOTES.txt
@@ -15,6 +15,10 @@ OTB-v.2.2.1 - Changes since version 2.0.0 (2008/06/13)
 	- Added pixel size matching in otbSpectralAngleDistanceImageFilter.
 
 
+*Platforms:
+
+	- Fixed compilation problems using external FLTK version < 1.1.9 under fedora unix distribution.
+
 
 OTB-v.2.2.0 - Changes since version 2.0.0 (2008/05/29)
 -----------------------------------------