diff --git a/dump-extensions/openpower-dumps/op_dump_consts.hpp b/dump-extensions/openpower-dumps/op_dump_consts.hpp
new file mode 100644
index 0000000..4ddd567
--- /dev/null
+++ b/dump-extensions/openpower-dumps/op_dump_consts.hpp
@@ -0,0 +1,3 @@
+#pragma once
+
+constexpr uint32_t INVALID_SOURCE_ID = 0xFFFFFFFF;