diff --git a/binaries/runtime/src/main.rs b/binaries/runtime/src/main.rs
index ce938613..cb05a6ff 100644
--- a/binaries/runtime/src/main.rs
+++ b/binaries/runtime/src/main.rs
@@ -284,6 +284,8 @@ fn set_up_logger() -> Result<(), fern::InitError> {
         })
         .level(log::LevelFilter::Debug)
         .level_for("zenoh", log::LevelFilter::Warn)
+        .level_for("zenoh_transport", log::LevelFilter::Warn)
+        .level_for("zenoh_link_tcp", log::LevelFilter::Warn)
         .chain(std::io::stdout())
         .chain(fern::log_file("runtime.log")?)
         .apply()?;
diff --git a/examples/c-dataflow/run.rs b/examples/c-dataflow/run.rs
index 207ef327..d69dede1 100644
--- a/examples/c-dataflow/run.rs
+++ b/examples/c-dataflow/run.rs
@@ -3,12 +3,12 @@ use std::path::Path;
 
 #[tokio::main]
 async fn main() -> eyre::Result<()> {
-    std::env::set_current_dir(Path::new(file!()).parent().unwrap())
+    let root = Path::new(env!("CARGO_MANIFEST_DIR"));
+    std::env::set_current_dir(root.join(file!()).parent().unwrap())
         .wrap_err("failed to set working dir")?;
 
     tokio::fs::create_dir_all("build").await?;
 
-    let root = Path::new(env!("CARGO_MANIFEST_DIR"));
     build_package("dora-runtime").await?;
     build_package("dora-node-api-c").await?;
     build_c_node(root, "node.c", "c_node").await?;