diff --git a/src/graph/service/GraphFlags.cpp b/src/graph/service/GraphFlags.cpp
index 532174509b4..d805e2dc7be 100644
--- a/src/graph/service/GraphFlags.cpp
+++ b/src/graph/service/GraphFlags.cpp
@@ -84,3 +84,4 @@ static bool ValidateSessIdleTimeout(const char* flagname, int32_t value) {
   return false;
 }
 DEFINE_validator(session_idle_timeout_secs, &ValidateSessIdleTimeout);
+DEFINE_validator(client_idle_timeout_secs, &ValidateSessIdleTimeout);