1 files changed, 1 insertions, 1 deletions

diff --git a/src/FbTk/Makefile.am b/src/FbTk/Makefile.am
index 6fa874a..fcf0304 100644
--- a/src/FbTk/Makefile.am
+++ b/src/FbTk/Makefile.am
@@ -44,7 +44,7 @@ libFbTk_a_SOURCES = App.hh App.cc Color.cc Color.hh Command.hh \
         StringUtil.hh StringUtil.cc Parser.hh Parser.cc \
         RegExp.hh RegExp.cc \
         FbString.hh FbString.cc \
-        Subject.hh Subject.cc Observer.hh Observer.cc \
+        Subject.hh Subject.cc Observer.hh Observer.cc SimpleObserver.hh \
         Transparent.hh Transparent.cc \
         FbPixmap.hh FbPixmap.cc \
         FbDrawable.hh FbDrawable.cc \