diff --git a/src/FactSystem/ParameterManager.cc b/src/FactSystem/ParameterManager.cc
index 09ff4157b9ff4a78a4069417ed5a9d19d03a677e..2546f6b2de106f0b9a220736fe33cc82a7618a7c 100644
--- a/src/FactSystem/ParameterManager.cc
+++ b/src/FactSystem/ParameterManager.cc
@@ -110,7 +110,7 @@ void ParameterManager::_parameterUpdate(int vehicleId, int componentId, QString
 
     // ArduPilot has this strange behavior of streaming parameters that we didn't ask for. This even happens before it responds to the
     // PARAM_REQUEST_LIST. We disregard any of this until the initial request is responded to.
-    if (parameterId == 65535 && _initialRequestTimeoutTimer.isActive()) {
+    if (parameterId == 65535 && parameterName != "_HASH_CHECK" && _initialRequestTimeoutTimer.isActive()) {
         qCDebug(ParameterManagerVerbose1Log) << "Disregarding unrequested param prior to intial list response" << parameterName;
         return;
     }