diff --git a/attrib/gattrib.c b/attrib/gattrib.c
index a6511a2..a65d1ca 100644
--- a/attrib/gattrib.c
+++ b/attrib/gattrib.c
@@ -690,18 +690,6 @@ static int event_cmp_by_id(gconstpointer a, gconstpointer b)
 	return evt->id - id;
 }
 
-gboolean g_attrib_is_encrypted(GAttrib *attrib)
-{
-	BtIOSecLevel sec_level;
-
-	if (!bt_io_get(attrib->io, NULL,
-			BT_IO_OPT_SEC_LEVEL, &sec_level,
-			BT_IO_OPT_INVALID))
-		return FALSE;
-
-	return sec_level > BT_IO_SEC_LOW;
-}
-
 gboolean g_attrib_unregister(GAttrib *attrib, guint id)
 {
 	struct event *evt;
diff --git a/attrib/gattrib.h b/attrib/gattrib.h
index 99b8b37..1557b99 100644
--- a/attrib/gattrib.h
+++ b/attrib/gattrib.h
@@ -62,8 +62,6 @@ guint g_attrib_register(GAttrib *attrib, guint8 opcode, guint16 handle,
 				GAttribNotifyFunc func, gpointer user_data,
 				GDestroyNotify notify);
 
-gboolean g_attrib_is_encrypted(GAttrib *attrib);
-
 uint8_t *g_attrib_get_buffer(GAttrib *attrib, size_t *len);
 gboolean g_attrib_set_mtu(GAttrib *attrib, int mtu);
 
diff --git a/src/attrib-server.c b/src/attrib-server.c
index e65fff2..6571577 100644
--- a/src/attrib-server.c
+++ b/src/attrib-server.c
@@ -372,6 +372,18 @@ static struct attribute *attrib_db_add_new(struct gatt_server *server,
 	return a;
 }
 
+static bool g_attrib_is_encrypted(GAttrib *attrib)
+{
+	BtIOSecLevel sec_level;
+	GIOChannel *io = g_attrib_get_channel(attrib);
+
+	if (!bt_io_get(io, NULL, BT_IO_OPT_SEC_LEVEL, &sec_level,
+							     BT_IO_OPT_INVALID))
+		return FALSE;
+
+	return sec_level > BT_IO_SEC_LOW;
+}
+
 static uint8_t att_check_reqs(struct gatt_channel *channel, uint8_t opcode,
 								int reqs)
 {