diff --git a/node-latex-pdf.js b/node-latex-pdf.js
index 7f33043..fc07a48 100644
--- a/node-latex-pdf.js
+++ b/node-latex-pdf.js
@@ -1,4 +1,4 @@
-const { exec } = require('child_process');
+const { execFile } = require('child_process');
 const path = require('path');
 const fs = require('fs');
 const os = require('os');
@@ -7,12 +7,12 @@ var selflatex = function(src_file,dest_file,callback){
     // split with src file name 
     var texname = src_file.split('/').splice(-1)[0].split('.')[0];
     // compile and 
-    exec("pdflatex -output-directory " + dest_file + " " + src_file, (err,stdout,stderr) => {
+    execFile("pdflatex", ["-output-directory", dest_file, src_file], (err,stdout,stderr) => {
         if (err) {
             callback(1,`pdflatex[1] error: ${err}`);
         }else{
             // compile second time to fit the usage
-            exec("pdflatex -output-directory " + dest_file + " " + src_file, (err,stdout,stderr) => {
+            execFile("pdflatex", ["-output-directory", dest_file, src_file], (err,stdout,stderr) => {
                 if (err) {
                     callback(1,`pdflatex[2] error: ${err}`);
                 }