diff --git a/src/rt/rust_internal.h b/src/rt/rust_internal.h
index 2676e9b9b191471124d2beb98637249ffc9cfdce..29e36fcd72dc19ce3db9e4645e6443a7ea68ec81 100644
--- a/src/rt/rust_internal.h
+++ b/src/rt/rust_internal.h
@@ -47,8 +47,8 @@ extern "C" {
 #include "sync/lock_and_signal.h"
 #include "sync/lock_free_queue.h"
 
-class rust_dom;
-class rust_task;
+struct rust_dom;
+struct rust_task;
 class rust_log;
 class rust_port;
 class rust_chan;
diff --git a/src/rt/rust_log.h b/src/rt/rust_log.h
index 51019a89febfe5e75ecf55c54f230607b8967fa2..dd42ee008f3e58401af9bd08d07f3765f14c4608 100644
--- a/src/rt/rust_log.h
+++ b/src/rt/rust_log.h
@@ -22,8 +22,8 @@ const uint32_t log_note = 1;
         }                                                       \
     } while (0)
 
-class rust_dom;
-class rust_task;
+struct rust_dom;
+struct rust_task;
 
 class rust_log {
 
diff --git a/src/rt/rust_proxy.h b/src/rt/rust_proxy.h
index 2b5e820da100a1cdc2847b96299e447e97c0ad11..ce41b6544f9b4b26f77cab6dda1e9f2a53a90cbf 100644
--- a/src/rt/rust_proxy.h
+++ b/src/rt/rust_proxy.h
@@ -64,7 +64,7 @@ public:
 };
 
 class rust_message_queue;
-class rust_task;
+struct rust_task;
 
 //
 // Local Variables: