diff --git a/attrib/gatttool.h b/attrib/gatttool.h
index 2fd4a46..e652a81 100644
--- a/attrib/gatttool.h
+++ b/attrib/gatttool.h
@@ -21,7 +21,7 @@
  *
  */
 
-int interactive(gchar *dst, gboolean le);
+int interactive(const gchar *dst, gboolean le);
 GIOChannel *gatt_connect(const gchar *src, const gchar *dst,
 			const gchar *sec_level, int psm, int mtu,
 			BtIOConnect connect_cb);
diff --git a/attrib/interactive.c b/attrib/interactive.c
index 8429a47..e39b43c 100644
--- a/attrib/interactive.c
+++ b/attrib/interactive.c
@@ -691,7 +691,7 @@
 	return TRUE;
 }
 
-int interactive(gchar *dst, int psm)
+int interactive(const gchar *dst, int psm)
 {
 	GIOChannel *pchan;
 	gint events;