diff --git a/src/app.cpp b/src/app.cpp
index 22ef018..2e3e277 100644
--- a/src/app.cpp
+++ b/src/app.cpp
@@ -169,12 +169,7 @@ bool App::init()
     // Lite builds with a linked SDXL backend own a lite wallet controller that drives
     // real create/open/restore through the bridge. Full-node and unlinked-lite builds
     // leave lite_wallet_ null (the UI falls back to validation-only).
-    if (supportsLiteBackend()) {
-        lite_wallet_ = wallet::LiteWalletController::createLinked(
-            walletCapabilities(),
-            wallet::liteConnectionSettingsFromAppSettings(*settings_));
-        lite_wallet_->setPersistCallback([this]() { settings_->save(); });
-    }
+    rebuildLiteWallet();
 
     // Apply verbose logging preference from saved settings
     util::Logger::instance().setVerbose(settings_->getVerboseLogging());
@@ -370,6 +365,21 @@ void App::preFrame()
     }
 }
 
+void App::rebuildLiteWallet()
+{
+    if (!supportsLiteBackend() || !settings_) return;
+    // Don't tear down a live session: if a wallet is already open (and possibly mid-sync), the
+    // new server selection is already persisted to settings and will take effect the next time
+    // the controller is built (next launch, or before another wallet is opened). Rebuilding now
+    // would discard the open wallet and its in-flight, uninterruptible sync.
+    if (lite_wallet_ && lite_wallet_->walletOpen()) return;
+
+    lite_wallet_ = wallet::LiteWalletController::createLinked(
+        walletCapabilities(),
+        wallet::liteConnectionSettingsFromAppSettings(*settings_));
+    lite_wallet_->setPersistCallback([this]() { settings_->save(); });
+}
+
 void App::update()
 {
     PERF_SCOPE("Update.Total");
diff --git a/src/app.h b/src/app.h
index 4629112..2abb5e7 100644
--- a/src/app.h
+++ b/src/app.h
@@ -157,6 +157,9 @@ public:
     config::Settings* settings() { return settings_.get(); }
     // Lite wallet controller (non-null only in lite builds with a linked backend).
     wallet::LiteWalletController* liteWallet() { return lite_wallet_.get(); }
+    // (Re)build the lite controller from current settings so a changed lite-server selection
+    // takes effect. No-op on non-lite/unlinked builds; preserves a live wallet (see app.cpp).
+    void rebuildLiteWallet();
     WalletState& state() { return state_; }
     const WalletState& state() const { return state_; }
     const WalletState& getWalletState() const { return state_; }
diff --git a/src/ui/pages/settings_page.cpp b/src/ui/pages/settings_page.cpp
index 40ca07f..83177fd 100644
--- a/src/ui/pages/settings_page.cpp
+++ b/src/ui/pages/settings_page.cpp
@@ -197,6 +197,9 @@ static void saveLiteServerSelectionFromPageState(App* app) {
     const auto result = wallet::executeLiteWalletServerSelectionUi(*app->settings(), input);
     if (result.settingsWritten) {
         s_settingsState.lite_server_status = "Saved";
+        // Rebuild the lite controller so the newly-saved server actually takes effect (it is
+        // otherwise captured once at startup). No-op if a wallet is already open mid-session.
+        app->rebuildLiteWallet();
     } else if (!result.error.empty()) {
         s_settingsState.lite_server_status = result.error;
         Notifications::instance().warning(result.error);