diff --git a/src/libboard_artiq/src/drtioaux_proto.rs b/src/libboard_artiq/src/drtioaux_proto.rs
index 922118d..d00cf96 100644
--- a/src/libboard_artiq/src/drtioaux_proto.rs
+++ b/src/libboard_artiq/src/drtioaux_proto.rs
@@ -1268,7 +1268,8 @@ impl Packet {
             | Packet::SubkernelMessageAck { .. }
             | Packet::DmaPlaybackStatus { .. }
             | Packet::SubkernelFinished { .. }
-            | Packet::CoreMgmtDropLinkAck { .. } => false,
+            | Packet::CoreMgmtDropLinkAck { .. }
+            | Packet::InjectionRequest { .. } => false,
             _ => true,
         }
     }