diff --git a/drivers/filter/main.c b/drivers/filter/main.c
index 54a7c3522..4c588d556 100644
--- a/drivers/filter/main.c
+++ b/drivers/filter/main.c
@@ -472,7 +472,7 @@ PRIVATE int sef_cb_init_fresh(int type, sef_init_info_t *info)
 	driver_init();
 
 	/* Subscribe to driver events for VFS drivers. */
-	r = ds_subscribe("drv\.vfs\..*", DSF_INITIAL | DSF_OVERWRITE);
+	r = ds_subscribe("drv\\.vfs\\..*", DSF_INITIAL | DSF_OVERWRITE);
 	if(r != OK) {
 		panic("Filter: can't subscribe to driver events");
 	}