diff --git a/users/simon/base.nix b/users/simon/base.nix
index de3da75..83c2d66 100644
--- a/users/simon/base.nix
+++ b/users/simon/base.nix
@@ -45,5 +45,14 @@ in
         gtk-enable-tooltips = 0
       '';
     };
+
+    xdg.mimeApps = {
+      enable = true;
+      defaultApplications = {
+        "application/pdf" = "org.pwmt.zathura.desktop";
+        "image/png" = "mpv.desktop";
+        "image/jpeg" = "mpv.desktop";
+      };
+    };
   };
 }