diff --git a/src/I18n.php b/src/I18n.php
index 1afb349..c16e72f 100644
--- a/src/I18n.php
+++ b/src/I18n.php
@@ -327,7 +327,11 @@ class I18n {
     if ($core_mode) {
       // List EesyPHP PHP files to parse
       $eesyphp_php_files = run_external_command(
-        array('find', '-name', "'*.php'"),
+        array(
+          'find', '-name', "'*.php'",        // Looking for PHP files
+          "-not", "-path", "'.*/vendor/*'",  // Exclude vendor directories
+          "-not", "-name", "'*.tpl.php'"     // Exclude Smarty cache template files
+        ),
         null,    // no STDIN data
         false,   // do not escape command args (already done)
         __DIR__  // Run from EesyPHP src directory
@@ -360,7 +364,11 @@ class I18n {
     else {
       // List application PHP files to parse
       $php_files = run_external_command(
-        array('find', '-name', "'*.php'"),
+        array(
+          'find', '-name', "'*.php'",        // Looking for PHP files
+          "-not", "-path", "'.*/vendor/*'",  // Exclude vendor directories
+          "-not", "-name", "'*.tpl.php'"     // Exclude Smarty cache template files
+        ),
         null,    // no STDIN data
         false,   // do not escape command args (already done)
         App :: root_directory_path()  // Run from Application root directory