diff --git a/install.sh b/install.sh
index c64c7f0..b29280a 100644
--- a/install.sh
+++ b/install.sh
@@ -446,7 +446,9 @@ install_makemkv() {
 sync_makemkv_beta_key() {
   header "MakeMKV Betakey synchronisieren"
 
-  local backend_settings_url="http://127.0.0.1:${BACKEND_PORT}/settings"
+  local backend_base_url="http://127.0.0.1:${BACKEND_PORT}/api"
+  local backend_health_url="${backend_base_url}/health"
+  local backend_settings_url="${backend_base_url}/settings"
   local beta_api_url="https://cable.ayra.ch/makemkv/api.php?json"
   local settings_response=""
   local current_key=""
@@ -454,6 +456,7 @@ sync_makemkv_beta_key() {
   local beta_key=""
   local save_response=""
   local makemkv_settings_file="${SERVICE_HOME}/.MakeMKV/settings.conf"
+  local wait_attempt=0
 
   update_makemkv_settings_file_key() {
     local settings_file="$1"
@@ -473,6 +476,14 @@ sync_makemkv_beta_key() {
     chmod 600 "$settings_file" 2>/dev/null || true
   }
 
+  while (( wait_attempt < 10 )); do
+    if curl -fsS "$backend_health_url" >/dev/null 2>&1; then
+      break
+    fi
+    wait_attempt=$((wait_attempt + 1))
+    sleep 1
+  done
+
   if ! settings_response=$(curl -fsS "$backend_settings_url" 2>/dev/null); then
     warn "Backend-Settings konnten nicht geladen werden."
     warn "Betakey-Synchronisierung übersprungen: $backend_settings_url"