diff --git a/rust/kernel/opp.rs b/rust/kernel/opp.rs
index c2bdc11f3999..a566fc3e7dcb 100644
--- a/rust/kernel/opp.rs
+++ b/rust/kernel/opp.rs
@@ -575,6 +575,7 @@ extern "C" fn config_regulators(
 /// frequency.
 ///
 /// ```
+/// # #![cfg(CONFIG_OF)]
 /// use kernel::clk::Hertz;
 /// use kernel::cpumask::Cpumask;
 /// use kernel::device::Device;
@@ -582,7 +583,6 @@ extern "C" fn config_regulators(
 /// use kernel::opp::Table;
 /// use kernel::types::ARef;
 ///
-/// #[cfg(CONFIG_OF)]
 /// fn get_table(dev: &ARef<Device>, mask: &mut Cpumask, freq: Hertz) -> Result<Table> {
 ///     let mut opp_table = Table::from_of_cpumask(dev, mask)?;
 ///