diff --git a/virtualbox/actions/clean-previous-installation.sh b/virtualbox/actions/clean-previous-installation.sh
index aebb6651d..5fa059e30 100755
--- a/virtualbox/actions/clean-previous-installation.sh
+++ b/virtualbox/actions/clean-previous-installation.sh
@@ -20,9 +20,9 @@
 #   - check that there is no previous installation of Mirantis OpenStack (if there is one, the script deletes it)
 
 # Include the script with handy functions to operate VMs and VirtualBox networking
-source config.sh
-source functions/vm.sh
-source functions/network.sh
+source ./config.sh
+source ./functions/vm.sh
+source ./functions/network.sh
 
 # Delete all VMs from the previous Mirantis OpenStack installation
 delete_vms_multiple $vm_name_prefix
diff --git a/virtualbox/actions/create-interfaces.sh b/virtualbox/actions/create-interfaces.sh
index c21337858..64a900f00 100755
--- a/virtualbox/actions/create-interfaces.sh
+++ b/virtualbox/actions/create-interfaces.sh
@@ -21,9 +21,9 @@
 #
 
 # Include the script with handy functions to operate VMs and VirtualBox networking
-source config.sh
-source functions/vm.sh
-source functions/network.sh
+source ./config.sh
+source ./functions/vm.sh
+source ./functions/network.sh
 
 # Delete all host-only interfaces
 delete_all_hostonly_interfaces
diff --git a/virtualbox/actions/master-node-create-and-install.sh b/virtualbox/actions/master-node-create-and-install.sh
index 628738b87..2f4f93bbf 100755
--- a/virtualbox/actions/master-node-create-and-install.sh
+++ b/virtualbox/actions/master-node-create-and-install.sh
@@ -20,9 +20,9 @@
 #
 
 # Include the handy functions to operate VMs and track ISO installation progress
-source config.sh
-source functions/vm.sh
-source functions/product.sh
+source ./config.sh
+source ./functions/vm.sh
+source ./functions/product.sh
 
 # Create master node for the product
 name="${vm_name_prefix}master"
diff --git a/virtualbox/actions/master-node-enable-internet.sh b/virtualbox/actions/master-node-enable-internet.sh
index 1fe063db8..a3773dee6 100755
--- a/virtualbox/actions/master-node-enable-internet.sh
+++ b/virtualbox/actions/master-node-enable-internet.sh
@@ -22,9 +22,9 @@
 # Typically, you would use this script after time after rebooting VirtualBox VM with the master node.
 
 # Include the handy functions to operate VMs and track ISO installation progress
-source config.sh
-source functions/vm.sh
-source functions/product.sh
+source ./config.sh
+source ./functions/vm.sh
+source ./functions/product.sh
 
 # Master node name
 name="${vm_name_prefix}master"
diff --git a/virtualbox/actions/prepare-environment.sh b/virtualbox/actions/prepare-environment.sh
index 0c316b429..1c3092af1 100755
--- a/virtualbox/actions/prepare-environment.sh
+++ b/virtualbox/actions/prepare-environment.sh
@@ -23,9 +23,9 @@
 #
 
 # Include the script with handy functions to operate VMs and VirtualBox networking
-source config.sh 
-source functions/vm.sh
-source functions/network.sh
+source ./config.sh 
+source ./functions/vm.sh
+source ./functions/network.sh
 
 # Check for procps package
 if [ "$(uname -s | cut -c1-6)" = "CYGWIN" ]; then
diff --git a/virtualbox/actions/slave-nodes-create-and-boot.sh b/virtualbox/actions/slave-nodes-create-and-boot.sh
index a3c5bc146..ab3463d7e 100755
--- a/virtualbox/actions/slave-nodes-create-and-boot.sh
+++ b/virtualbox/actions/slave-nodes-create-and-boot.sh
@@ -20,8 +20,8 @@
 #
 
 # Include the handy functions to operate VMs
-source config.sh
-source functions/vm.sh
+source ./config.sh
+source ./functions/vm.sh
 
 # Create and start slave nodes
 for idx in $(eval echo {1..$cluster_size}); do
diff --git a/virtualbox/config.sh b/virtualbox/config.sh
index 8d2592482..fb8aefeed 100755
--- a/virtualbox/config.sh
+++ b/virtualbox/config.sh
@@ -14,7 +14,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-source functions/memory.sh
+source ./functions/memory.sh
 
 # Get the first available ISO from the directory 'iso'
 iso_path=`ls -1t iso/*.iso 2>/dev/null | head -1`