diff --git a/cir/Cargo.toml b/cir/Cargo.toml
index 0047526..c870406 100644
--- a/cir/Cargo.toml
+++ b/cir/Cargo.toml
@@ -36,3 +36,7 @@ libirctl = { workspace = true }
 libkcodec = { workspace = true }
 rand = "0.8"
 pretty_assertions = "1.4"
+
+[features]
+default = []
+loopback-tests = []
diff --git a/cir/src/bin/commands/transmit.rs b/cir/src/bin/commands/transmit.rs
index 6672bb5..174ec59 100644
--- a/cir/src/bin/commands/transmit.rs
+++ b/cir/src/bin/commands/transmit.rs
@@ -63,7 +63,7 @@ pub fn transmit(args: &crate::App, transmit: &crate::Transmit) {
                 .iter()
                 .fold(0, |acc, t| acc | (1 << (t - 1)));
 
-            info!("debug: setting transmitter mask {:08x}", mask);
+            info!("debug: setting transmitter mask {:#b}", mask);
 
             match lircdev.set_transmitter_mask(mask) {
                 Ok(v) => v,