diff --git a/TunnelKit/Sources/Core/CoreConfiguration.swift b/TunnelKit/Sources/Core/CoreConfiguration.swift
index 87448ac..d4cc9d7 100644
--- a/TunnelKit/Sources/Core/CoreConfiguration.swift
+++ b/TunnelKit/Sources/Core/CoreConfiguration.swift
@@ -83,6 +83,8 @@ struct CoreConfiguration {
         "IV_PROTO=2",
         "IV_NCP=2",
         "IV_SSL=\(CryptoBox.version())",
+        "IV_LZO=1",
+        "IV_LZO_STUB=1",
         ""
     ].joined(separator: "\n")