diff --git a/src/ClaudeDo.Installer/Steps/WriteConfigStep.cs b/src/ClaudeDo.Installer/Steps/WriteConfigStep.cs
index bfd4af1..f8dddef 100644
--- a/src/ClaudeDo.Installer/Steps/WriteConfigStep.cs
+++ b/src/ClaudeDo.Installer/Steps/WriteConfigStep.cs
@@ -29,7 +29,7 @@ public sealed class WriteConfigStep : IInstallStep
 
             var uiCfg = new InstallerAppSettings
             {
-                DbPath = ctx.UiDbPath,
+                DbPath = Paths.Expand(ctx.UiDbPath),
                 SignalRUrl = ctx.SignalRUrl,
             };
             uiCfg.Save();