diff --git a/tune-profiles/desktop-powersave/ktune.sh b/tune-profiles/desktop-powersave/ktune.sh
index d8ec369..4e4dba7 100755
--- a/tune-profiles/desktop-powersave/ktune.sh
+++ b/tune-profiles/desktop-powersave/ktune.sh
@@ -1,5 +1,7 @@
 #!/bin/sh
 
+VAR_SUBSYS_KTUNE="/var/lock/subsys/ktune"
+
 ALPM="min_power"
 
 set_alpm() {
diff --git a/tune-profiles/laptop-ac-powersave/ktune.sh b/tune-profiles/laptop-ac-powersave/ktune.sh
index 1654a56..36bc536 100755
--- a/tune-profiles/laptop-ac-powersave/ktune.sh
+++ b/tune-profiles/laptop-ac-powersave/ktune.sh
@@ -1,5 +1,7 @@
 #!/bin/sh
 
+VAR_SUBSYS_KTUNE="/var/lock/subsys/ktune"
+
 ALPM="min_power"
 
 set_alpm() {
diff --git a/tune-profiles/server-powersave/ktune.sh b/tune-profiles/server-powersave/ktune.sh
index 8750bbc..829e468 100755
--- a/tune-profiles/server-powersave/ktune.sh
+++ b/tune-profiles/server-powersave/ktune.sh
@@ -1,5 +1,7 @@
 #!/bin/sh
 
+VAR_SUBSYS_KTUNE="/var/lock/subsys/ktune"
+
 ALPM="min_power"
 
 set_alpm() {
diff --git a/tune-profiles/spindown-disk/ktune.sh b/tune-profiles/spindown-disk/ktune.sh
index ca923a6..6f5bbd2 100755
--- a/tune-profiles/spindown-disk/ktune.sh
+++ b/tune-profiles/spindown-disk/ktune.sh
@@ -2,6 +2,8 @@
 # Author of original script: Daniel Mach
 # Rewrite into profiles by: Marcela Mašláňová
 
+VAR_SUBSYS_KTUNE="/var/lock/subsys/ktune"
+
 ALPM="medium_power"
 
 # Set ALPM for all host adapters that support it