diff --git a/homeManagerModules/apps/backblaze/default.nix b/homeManagerModules/apps/backblaze/default.nix
index 04415eba..cf2d1fb7 100644
--- a/homeManagerModules/apps/backblaze/default.nix
+++ b/homeManagerModules/apps/backblaze/default.nix
@@ -11,9 +11,14 @@ in {
       activation.backblazeAuthentication = lib.hm.dag.entryAfter ["reloadSystemd"] ''
         ${
           if ((cfg.keyIdFile != null) && (cfg.keyFile != null))
-          then ''
-            XDG_RUNTIME_DIR=''${XDG_RUNTIME_DIR:-/run/user/$(id -u)}
-            run --quiet ${lib.getExe pkgs.backblaze-b2} authorize_account `${lib.getExe' pkgs.coreutils "cat"} ${cfg.keyIdFile}` `${lib.getExe' pkgs.coreutils "cat"} ${cfg.keyFile}`''
+          then
+            (
+              if !(builtins.pathExists "${config.xdg.configHome}/b2/account_info")
+              then ''
+                XDG_RUNTIME_DIR=''${XDG_RUNTIME_DIR:-/run/user/$(id -u)}
+                run --quiet ${lib.getExe pkgs.backblaze-b2} authorize_account `${lib.getExe' pkgs.coreutils "cat"} ${cfg.keyIdFile}` `${lib.getExe' pkgs.coreutils "cat"} ${cfg.keyFile}`''
+              else ''run echo "backblaze: Already authenticated."''
+            )
           else ''run echo "backblaze: Missing keyIDfile and keyFile."''
         }
       '';