diff --git a/profiles/realtime-virtual-guest/script.sh b/profiles/realtime-virtual-guest/script.sh
index 33cb730..ce94a4b 100755
--- a/profiles/realtime-virtual-guest/script.sh
+++ b/profiles/realtime-virtual-guest/script.sh
@@ -2,8 +2,13 @@
 
 . /usr/lib/tuned/functions
 
+KTIMER_LOCKLESS_FILE=/sys/kernel/ktimer_lockless_check
+
 start() {
     systemctl start rt-entsk
+    if [ -f $KTIMER_LOCKLESS_FILE ]; then
+        echo 1 > $KTIMER_LOCKLESS_FILE
+    fi
     return "$?"
 }
 
diff --git a/profiles/realtime-virtual-host/script.sh b/profiles/realtime-virtual-host/script.sh
index 8ff5509..be1804f 100755
--- a/profiles/realtime-virtual-host/script.sh
+++ b/profiles/realtime-virtual-host/script.sh
@@ -5,6 +5,7 @@
 CACHE_VALUE_FILE=./lapic_timer_adv_ns
 CACHE_CPU_FILE=./lapic_timer_adv_ns.cpumodel
 KVM_LAPIC_FILE=/sys/module/kvm/parameters/lapic_timer_advance_ns
+KTIMER_LOCKLESS_FILE=/sys/kernel/ktimer_lockless_check
 QEMU=$(type -P qemu-kvm || echo /usr/libexec/qemu-kvm)
 TSCDEADLINE_LATENCY="/usr/share/qemu-kvm/tscdeadline_latency.flat"
 if [ ! -f "$TSCDEADLINE_LATENCY" ]; then
@@ -100,6 +101,10 @@ start() {
     fi
     systemctl start rt-entsk
 
+    if [ -f $KTIMER_LOCKLESS_FILE ]; then
+        echo 1 > $KTIMER_LOCKLESS_FILE
+    fi
+
     return 0
 }