diff --git a/modules/programs/firefox/mkFirefoxModule.nix b/modules/programs/firefox/mkFirefoxModule.nix
index 1bb2253f1..aa5fe1b8b 100644
--- a/modules/programs/firefox/mkFirefoxModule.nix
+++ b/modules/programs/firefox/mkFirefoxModule.nix
@@ -61,7 +61,7 @@ let
       Default = if profile.isDefault then 1 else 0;
     }) // {
       General = {
-        StartWithLastProfile = 1;
+        StartWithLastProfile = 0;
       } // lib.optionalAttrs (cfg.profileVersion != null) {
         Version = cfg.profileVersion;
       };