diff --git a/ChangeLog b/ChangeLog
index feb2c84c2..218e651a9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2005-02-05  Alexandre Duret-Lutz  <adl@src.lip6.fr>
+
+	* src/misc/ltstr.hh: Include <functional>
+
 2005-02-04  Alexandre Duret-Lutz  <adl@src.lip6.fr>
 
 	* src/tgbatest/randtgba.cc (stat_collector): New class, replacing...
diff --git a/src/misc/ltstr.hh b/src/misc/ltstr.hh
index 02f398d8c..2bfee2def 100644
--- a/src/misc/ltstr.hh
+++ b/src/misc/ltstr.hh
@@ -22,7 +22,8 @@
 #ifndef SPOT_MISC_LTSTR_HH
 #  define SPOT_MISC_LTSTR_HH
 
-#include <cstring>
+#  include <cstring>
+#  include <functional>
 
 namespace spot
 {