diff --git a/cyw43-pio/Cargo.toml b/cyw43-pio/Cargo.toml
index dbb94f61..c5632d5f 100644
--- a/cyw43-pio/Cargo.toml
+++ b/cyw43-pio/Cargo.toml
@@ -8,7 +8,6 @@ edition = "2021"
 [dependencies]
 cyw43 = { path = "../" }
 embassy-rp = { version = "0.1.0",  features = ["unstable-traits", "nightly", "unstable-pac", "time-driver"] }
-# embassy-rp = { version = "0.1.0",  features = ["defmt", "unstable-traits", "nightly", "unstable-pac", "time-driver"] }
 pio-proc = "0.2"
 pio = "0.2.1"
-# defmt = "0.3"
\ No newline at end of file
+defmt = { version = "0.3", optional = true }
\ No newline at end of file
diff --git a/cyw43-pio/src/lib.rs b/cyw43-pio/src/lib.rs
index f67a55a0..c468435f 100644
--- a/cyw43-pio/src/lib.rs
+++ b/cyw43-pio/src/lib.rs
@@ -129,7 +129,8 @@ where
         let write_bits = write.len() * 32 - 1;
         let read_bits = 31;
 
-        // defmt::trace!("write={} read={}", write_bits, read_bits);
+        #[cfg(feature = "defmt")]
+        defmt::trace!("write={} read={}", write_bits, read_bits);
 
         let mut dma = Peripheral::into_ref(&mut self.dma);
         pio_instr_util::set_x(&mut self.sm, write_bits as u32);
@@ -151,7 +152,8 @@ where
         let write_bits = 31;
         let read_bits = read.len() * 32 + 32 - 1;
 
-        // defmt::trace!("write={} read={}", write_bits, read_bits);
+        #[cfg(feature = "defmt")]
+        defmt::trace!("write={} read={}", write_bits, read_bits);
 
         let mut dma = Peripheral::into_ref(&mut self.dma);
         pio_instr_util::set_y(&mut self.sm, read_bits as u32);