diff --git a/scripts/shared.js b/scripts/shared.js
index 9c4bc69..2004cbd 100644
--- a/scripts/shared.js
+++ b/scripts/shared.js
@@ -35,7 +35,7 @@ function getBlhostCmd(pid) {
             break;
     }
 
-    return `../../../lib/bootloader/bin/Tools/blhost/${blhostPath} --usb 0x1d50,${pid}`;
+    return `${__dirname}/../lib/bootloader/bin/Tools/blhost/${blhostPath} --usb 0x1d50,${pid}`;
 }
 
 function execRetry(command) {
diff --git a/scripts/update-master-firmware.js b/scripts/update-master-firmware.js
index 2ea81d2..5829e67 100755
--- a/scripts/update-master-firmware.js
+++ b/scripts/update-master-firmware.js
@@ -11,7 +11,7 @@ program
     .parse(process.argv)
 
 const firmwareImage = program.args[0];
-const usbDir = '../../../lib/agent/packages/usb';
+const usbDir = `${__dirname}/../lib/agent/packages/usb`;
 const blhost = getBlhostCmd(0x6120);
 
 checkFirmwareImage(firmwareImage, extension);
diff --git a/scripts/update-slave-firmware.js b/scripts/update-slave-firmware.js
index a3c2e99..aab4161 100755
--- a/scripts/update-slave-firmware.js
+++ b/scripts/update-slave-firmware.js
@@ -11,9 +11,9 @@ program
     .parse(process.argv)
 
 const firmwareImage = program.args[0];
-const usbDir = '../../../lib/agent/packages/usb';
+const usbDir = `${__dirname}/../lib/agent/packages/usb`;
 const blhostUsb = getBlhostCmd(0x6121);
-const blhostBuspal = blhostUsb + ' --buspal i2c,0x10,100k';
+const blhostBuspal = `${blhostUsb} --buspal i2c,0x10,100k`;
 
 checkFirmwareImage(firmwareImage, extension);