diff --git a/src/boxes.rs b/src/boxes.rs
index 900334c..62d183c 100644
--- a/src/boxes.rs
+++ b/src/boxes.rs
@@ -1,6 +1,6 @@
 use std::rc::Rc;
 
-use gtk4::{prelude::*, Window};
+use gtk4::{prelude::*, Window, FileFilter};
 use gtk4::{
     glib::*,
     ApplicationWindow,
@@ -73,6 +73,14 @@ impl RomBox {
 
                 // here's to set the dialog to be modal
                 dialog.set_modal(true);
+
+                // add a filter!
+                let rom_filter = FileFilter::new();
+                rom_filter.add_mime_type("application/vnd.nintendo.snes.rom");
+                rom_filter.set_name(Some("SNES ROMs"));
+                dialog.add_filter(&rom_filter);
+
+                // run the dialog
                 dialog.run_async(|d, r| {
                     match r {
                         ResponseType::Accept => d.close(),
@@ -142,6 +150,14 @@ impl PatchBox {
 
                 // here's to set the dialog to be modal
                 dialog.set_modal(true);
+
+                let patch_filter = FileFilter::new();
+                patch_filter.add_mime_type("application/x-bps-patch");
+                patch_filter.add_mime_type("application/x-ips-patch");
+                patch_filter.set_name(Some("Patches"));
+                dialog.add_filter(&patch_filter);
+
+                // run the dialog
                 dialog.run_async(|d, r| {
                     match r {
                         ResponseType::Accept => d.close(),