diff --git a/programs/server/Server.cpp b/programs/server/Server.cpp
index 414766ee42a..168a9a0489a 100644
--- a/programs/server/Server.cpp
+++ b/programs/server/Server.cpp
@@ -551,8 +551,9 @@ static void sanityChecks(Server & server)
     try
     {
         const char * filename = "/sys/devices/system/clocksource/clocksource0/current_clocksource";
-        if (readString(filename).find("tsc") == std::string::npos)
-            server.context()->addWarningMessage("Linux is not using a fast TSC clock source. Performance can be degraded. Check " + String(filename));
+        String clocksource = readString(filename);
+        if (clocksource.find("tsc") == std::string::npos && clocksource.find("kvm-clock") == std::string::npos)
+            server.context()->addWarningMessage("Linux is not using a fast clock source. Performance can be degraded. Check " + String(filename));
     }
     catch (...)
     {