diff --git a/sflphone-gtk/src/calltree.h b/sflphone-gtk/src/calltree.h
index c2bad5b661f1a0b75a8b993ee14375ec60975c17..0f1a434d687f56f99613fe03d33f2249a81834bc 100644
--- a/sflphone-gtk/src/calltree.h
+++ b/sflphone-gtk/src/calltree.h
@@ -23,6 +23,7 @@
 #include <gtk/gtk.h>
 #include <calllist.h>
 #include <calltab.h>
+#include <time.h>
 
 
 /** @file calltree.h