diff --git a/src/runtime/src/rtio_clocking.rs b/src/runtime/src/rtio_clocking.rs
index 566107f..cd279da 100644
--- a/src/runtime/src/rtio_clocking.rs
+++ b/src/runtime/src/rtio_clocking.rs
@@ -155,7 +155,7 @@ fn setup_si5324(i2c: &mut I2c, timer: &mut GlobalTimer, clk: RtioClock) {
                 crystal_ref: true
             }
         },
-        RtioClock::Int_100 => { // 100MHz output, from crystal. Also used as reference for Sayma HMC830.
+        RtioClock::Int_100 => { // 100MHz output, from crystal.
             info!("using internal 100MHz RTIO clock");
             si5324::FrequencySettings {
                 n1_hs  : 9,