diff --git a/lib/explorer.js b/lib/explorer.js
index e9d30e6..cec131f 100644
--- a/lib/explorer.js
+++ b/lib/explorer.js
@@ -1405,7 +1405,7 @@ module.exports = {
             // run a cmd that will determine if the lock should still be active
 
             try {
-              var cmdResult = execSync('ps -p `cat ' + pidFile + '` > /dev/null');
+              var cmdResult = execSync('ps -p `cat "' + pidFile + '"` > /dev/null');
             } catch (err) {
               // if an error occurs, the process is NOT running and therefore the lock should be deactivated
               deactivateLock = true;