diff --git a/crates/node/src/main.rs b/crates/node/src/main.rs
index 0527577..786dac0 100644
--- a/crates/node/src/main.rs
+++ b/crates/node/src/main.rs
@@ -29,8 +29,12 @@ struct Args {
     #[command(flatten)]
     pub rollup_args: RollupArgs,
 
-    #[arg(long = "websocket-url", value_name = "WEBSOCKET_URL")]
-    pub websocket_url: Option<String>,
+    #[arg(
+        long = "websocket-url", 
+        value_name = "WEBSOCKET_URL", 
+        value_parser = clap::value_parser!(Url)
+    )]
+    pub websocket_url: Option<Url>,
 
     /// Enable transaction tracing ExEx for mempool-to-block timing analysis
     #[arg(
@@ -48,6 +52,7 @@ struct Args {
 }
 
 impl Args {
+    #[inline]
     fn flashblocks_enabled(&self) -> bool {
         self.websocket_url.is_some()
     }