diff --git a/home/programs/firefox.nix b/home/programs/firefox.nix
index b4a7f8b..eb79567 100644
--- a/home/programs/firefox.nix
+++ b/home/programs/firefox.nix
@@ -304,6 +304,7 @@ in {
         "services.sync.engine.prefs.modified" = false;
         "services.sync.engine.tabs" = false;
 
+        "extensions.formautofill.creditCards.enabled" = false;
         "signon.autofillForms" = false;
         "signon.generation.enabled" = false;
         "signon.rememberSignons" = false;