diff --git a/config/config.exs b/config/config.exs
index c90ad32..3e187d0 100644
--- a/config/config.exs
+++ b/config/config.exs
@@ -54,8 +54,6 @@ config :aprsme,
   aprs_is_password: System.get_env("APRS_PASSCODE"),
   auto_migrate: true,
   env: config_env(),
-  # Packet retention period in days (default: 7 days)
-  packet_retention_days: String.to_integer(System.get_env("PACKET_RETENTION_DAYS", "7")),
   # GenStage packet processing configuration
   # Optimized for PostgreSQL with work_mem=16MB and synchronous_commit=off
   packet_pipeline: [
diff --git a/config/runtime.exs b/config/runtime.exs
index 8cf04e9..db7611a 100644
--- a/config/runtime.exs
+++ b/config/runtime.exs
@@ -144,6 +144,8 @@ if config_env() == :prod do
     aprs_is_default_filter: System.get_env("APRS_FILTER"),
     aprs_is_login_id: System.get_env("APRS_CALLSIGN"),
     aprs_is_password: System.get_env("APRS_PASSWORD") || System.get_env("APRS_PASSCODE"),
+    # Packet retention period in days (default: 7 days)
+    packet_retention_days: String.to_integer(System.get_env("PACKET_RETENTION_DAYS") || "7"),
     env: :prod
 
   # Configure Hammer for production environment