diff --git a/sys/compat/linuxkpi/common/include/linux/dynamic_debug.h b/sys/compat/linuxkpi/common/include/linux/dynamic_debug.h
new file mode 100644
--- /dev/null
+++ b/sys/compat/linuxkpi/common/include/linux/dynamic_debug.h
@@ -0,0 +1,8 @@
+/* Public domain. */
+
+#ifndef _LINUXKPI_LINUX_DYNAMIC_DEBUG_H
+#define _LINUXKPI_LINUX_DYNAMIC_DEBUG_H
+
+#define DECLARE_DYNDBG_CLASSMAP(a, b, c, ...)
+
+#endif