Fix tolower undeclared warning

diff --git a/src/phonebook.c b/src/phonebook.c
index 16d94d2..b277298 100644 (file)
--- a/src/phonebook.c
+++ b/src/phonebook.c
@@ -27,6 +27,7 @@
 #include <string.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <ctype.h>
 
 #include <dbus/dbus.h>
 #include <glib.h>