diff --git a/src/agent/src/config.rs b/src/agent/src/config.rs
index 1fd6345762..33a600ca65 100644
--- a/src/agent/src/config.rs
+++ b/src/agent/src/config.rs
@@ -21,6 +21,8 @@ const DEFAULT_HOTPLUG_TIMEOUT: time::Duration = time::Duration::from_secs(3);
 const DEFAULT_CONTAINER_PIPE_SIZE: i32 = 0;
 const VSOCK_ADDR: &str = "vsock://-1";
 const VSOCK_PORT: u16 = 1024;
+
+// Environment variable used for development and testing
 const SERVER_ADDR_ENV_VAR: &str = "KATA_AGENT_SERVER_ADDR";
 
 // FIXME: unused