diff --git a/src/satman/src/main.rs b/src/satman/src/main.rs
index fb93308..177d906 100644
--- a/src/satman/src/main.rs
+++ b/src/satman/src/main.rs
@@ -1249,8 +1249,8 @@ fn process_aux_packet(
                 timer
             );
 
-            error!("config erasen not supported on zynq device");
-            Ok(())
+            error!("config erase not supported on zynq device");
+            drtioaux::send(0, &drtioaux::Packet::CoreMgmtNack)
         }
         drtioaux::Packet::CoreMgmtRebootRequest {
             destination: _destination,
@@ -1287,7 +1287,7 @@ fn process_aux_packet(
             );
 
             error!("debug allocator not supported on zynq device");
-            Ok(())
+            drtioaux::send(0, &drtioaux::Packet::CoreMgmtNack)
         }
 
         p => {