diff --git a/debian/ngcp-rtpengine-daemon.init b/debian/ngcp-rtpengine-daemon.init
index 5e483225a..dad43edd3 100755
--- a/debian/ngcp-rtpengine-daemon.init
+++ b/debian/ngcp-rtpengine-daemon.init
@@ -136,7 +136,7 @@ fi
 case "$1" in
   start)
 	set +e
-	if [ -x "/usr/sbin/ngcp-check-active" ]; then
+	if [ -x "$(which ngcp-check-active)" ]; then
 	  case "$(ngcp-check-active -v)" in
 	    active|transition)
 	      log_action_msg "Active node or transition."
diff --git a/debian/ngcp-rtpengine-daemon.postinst b/debian/ngcp-rtpengine-daemon.postinst
index 60e584dcf..b42e00f5a 100644
--- a/debian/ngcp-rtpengine-daemon.postinst
+++ b/debian/ngcp-rtpengine-daemon.postinst
@@ -5,8 +5,8 @@ set -e
 default=/etc/default/ngcp-rtpengine-daemon
 modname=xt_RTPENGINE
 
-if [ -x /usr/sbin/ngcp-virt-identify ]; then
-	if /usr/sbin/ngcp-virt-identify --type container; then
+if [ -x "$(which ngcp-virt-identify)" ]; then
+	if ngcp-virt-identify --type container; then
 		VIRT="yes"
 	fi
 fi
diff --git a/debian/ngcp-rtpengine-iptables-setup b/debian/ngcp-rtpengine-iptables-setup
index 7764b2c13..252939cb3 100755
--- a/debian/ngcp-rtpengine-iptables-setup
+++ b/debian/ngcp-rtpengine-iptables-setup
@@ -31,8 +31,8 @@ fi
 
 ###
 
-if [ -x /usr/sbin/ngcp-virt-identify ]; then
-  if /usr/sbin/ngcp-virt-identify --type container; then
+if [ -x "$(which ngcp-virt-identify)" ]; then
+  if ngcp-virt-identify --type container; then
     VIRT="yes"
   fi
 fi
diff --git a/debian/ngcp-rtpengine-kernel-dkms.postinst b/debian/ngcp-rtpengine-kernel-dkms.postinst
index 3d7694a32..21e008032 100644
--- a/debian/ngcp-rtpengine-kernel-dkms.postinst
+++ b/debian/ngcp-rtpengine-kernel-dkms.postinst
@@ -9,8 +9,8 @@ version=$(dpkg-query -W -f="\${Version}" "$package" \
 		|rev|cut -d- -f2-|rev|cut -d':' -f2|tr -d "\n")
 
 
-if [ -x /usr/sbin/ngcp-virt-identify ]; then
-	if /usr/sbin/ngcp-virt-identify --type container; then
+if [ -x "$(which ngcp-virt-identify)" ]; then
+	if ngcp-virt-identify --type container; then
 		VIRT="yes"
 	fi
 fi
diff --git a/debian/ngcp-rtpengine-kernel-dkms.prerm b/debian/ngcp-rtpengine-kernel-dkms.prerm
index 0cf711ad8..e58a7f13a 100644
--- a/debian/ngcp-rtpengine-kernel-dkms.prerm
+++ b/debian/ngcp-rtpengine-kernel-dkms.prerm
@@ -8,8 +8,8 @@ name=ngcp-rtpengine
 version=$(dpkg-query -W -f="\${Version}" "$package" \
         |rev|cut -d- -f2-|rev|cut -d':' -f2|tr -d "\n")
 
-if [ -x /usr/sbin/ngcp-virt-identify ]; then
-	if /usr/sbin/ngcp-virt-identify --type container; then
+if [ -x "$(which ngcp-virt-identify)" ]; then
+	if ngcp-virt-identify --type container; then
 		VIRT="yes"
 	fi
 fi
diff --git a/debian/ngcp-rtpengine-recording-daemon.init b/debian/ngcp-rtpengine-recording-daemon.init
index b36e7901e..3bed33f8e 100755
--- a/debian/ngcp-rtpengine-recording-daemon.init
+++ b/debian/ngcp-rtpengine-recording-daemon.init
@@ -67,7 +67,7 @@ fi
 case "$1" in
   start)
 	set +e
-	if [ -x "/usr/sbin/ngcp-check-active" ]; then
+	if [ -x "$(which ngcp-check-active)" ]; then
 	  case "$(ngcp-check-active -v)" in
 	    active|transition)
 	      log_action_msg "Active node or transition."