diff --git a/hsbp-manager/include/utils.hpp b/hsbp-manager/include/utils.hpp
index 0b47a54..a3b0294 100644
--- a/hsbp-manager/include/utils.hpp
+++ b/hsbp-manager/include/utils.hpp
@@ -71,6 +71,12 @@
 const static constexpr char* property = "CurrentHostState";
 } // namespace power
 
+namespace association
+{
+const static constexpr char* interface =
+    "xyz.openbmc_project.Association.Definitions";
+} // namespace association
+
 namespace hsbp
 {
 enum class registers : uint8_t