diff --git a/boards/pro_micro_rp2040/examples/pro_micro_rainbow.rs b/boards/pro_micro_rp2040/examples/pro_micro_rainbow.rs
index 03ec2a3..dd9a094 100644
--- a/boards/pro_micro_rp2040/examples/pro_micro_rainbow.rs
+++ b/boards/pro_micro_rp2040/examples/pro_micro_rainbow.rs
@@ -80,7 +80,7 @@ fn main() -> ! {
         25,
         pac.PIO0,
         &mut pac.RESETS,
-        clocks.system_clock.freq(),
+        clocks.peripheral_clock.freq(),
         timer.count_down(),
     );
 
diff --git a/rp2040-hal/examples/i2c.rs b/rp2040-hal/examples/i2c.rs
index 8526217..f77bfc1 100644
--- a/rp2040-hal/examples/i2c.rs
+++ b/rp2040-hal/examples/i2c.rs
@@ -91,7 +91,7 @@ fn main() -> ! {
         scl_pin, // Try `not_an_scl_pin` here
         400.kHz(),
         &mut pac.RESETS,
-        clocks.system_clock,
+        clocks.peripheral_clock,
     );
 
     // Write three bytes to the I²C device with 7-bit address 0x2C