diff --git a/artiq/firmware/libboard_artiq/hmc830_7043.rs b/artiq/firmware/libboard_artiq/hmc830_7043.rs
index b1d1cb3b9..faa26630a 100644
--- a/artiq/firmware/libboard_artiq/hmc830_7043.rs
+++ b/artiq/firmware/libboard_artiq/hmc830_7043.rs
@@ -131,8 +131,6 @@ mod hmc830 {
         write(0x4, m_div);
         write(0x3, n_div);
 
-        clock::spin_us(10_000);
-
         info!("  ...done");
     }
 
@@ -339,6 +337,8 @@ pub mod hmc7043 {
         write(0x1, 0xc8);  // Synchronize dividers
         write(0x1, 0x40);  // Unmute, high-performance/low-noise mode
 
+        clock::spin_us(10_000);
+
         info!("  ...done");
     }