diff --git a/nix/homeModules/common/sioyek.nix b/nix/homeModules/common/sioyek.nix
index 6547d74d..93ee594d 100644
--- a/nix/homeModules/common/sioyek.nix
+++ b/nix/homeModules/common/sioyek.nix
@@ -3,6 +3,9 @@
   lib,
   ...
 }:
+let
+  cfg = config.programs.sioyek;
+in
 {
   programs.sioyek = {
     bindings = {
@@ -28,10 +31,15 @@
     config.should_launch_new_window = "1";
   };
 
-  xdg.mimeApps = lib.mkIf config.programs.sioyek.enable {
-    enable = true;
-    defaultApplications = {
-      "application/pdf" = [ "sioyek.desktop" ];
+  xdg.mimeApps =
+    let
+      associations = {
+        "application/pdf" = [ "sioyek.desktop" ];
+      };
+    in
+    lib.mkIf cfg.enable {
+      enable = true;
+      associations.added = associations;
+      defaultApplications = associations;
     };
-  };
 }