diff --git a/include/peci_pcie.hpp b/include/peci_pcie.hpp
index 3771699..74ea2da 100644
--- a/include/peci_pcie.hpp
+++ b/include/peci_pcie.hpp
@@ -32,4 +32,5 @@
 static constexpr const int maxPCIFunctions = 8;
 
 static constexpr const int peciCheckInterval = 10;
+static constexpr const int osStandbyDelaySeconds = 10;
 } // namespace peci_pcie