diff --git a/src/main-process/parse-command-line.js b/src/main-process/parse-command-line.js
index 809971e85..55aa7c900 100644
--- a/src/main-process/parse-command-line.js
+++ b/src/main-process/parse-command-line.js
@@ -183,7 +183,7 @@ module.exports = function parseCommandLine (processArgs, initialResourcePath) {
 }
 
 function normalizeDriveLetterName (filePath) {
-  if (process.platform === 'win32') {
+  if (process.platform === 'win32' && filePath) {
     return filePath.replace(/^([a-z]):/, ([driveLetter]) => driveLetter.toUpperCase() + ':')
   } else {
     return filePath