diff --git a/public_html/_incl/tools.security.php b/public_html/_incl/tools.security.php
index bb6ffcc..b7cfa5e 100644
--- a/public_html/_incl/tools.security.php
+++ b/public_html/_incl/tools.security.php
@@ -140,9 +140,62 @@ function safe_aulario_id($value)
 
 function safe_filename($name)
 {
+    // Normalize to base name to avoid directory traversal
     $name = basename((string)$name);
+
+    // Best-effort normalize encoding to avoid odd Unicode tricks
+    if (function_exists('mb_convert_encoding')) {
+        $name = mb_convert_encoding($name, 'UTF-8', 'UTF-8');
+    }
+
+    // Replace disallowed characters with underscore
     $name = preg_replace('/[^A-Za-z0-9._-]/', '_', $name);
+    // Collapse multiple underscores introduced by replacement
+    $name = preg_replace('/_+/', '_', $name);
+
+    // Remove leading dots to avoid hidden/special files like ".htaccess"
     $name = ltrim($name, '.');
+
+    // Ensure there is at most one dot in the filename to prevent extension confusion
+    if (substr_count($name, '.') > 1) {
+        $parts = explode('.', $name);
+        $ext   = array_pop($parts);
+        $base  = implode('_', $parts);
+        // Ensure extension is not empty
+        if ($ext === '') {
+            $name = $base === '' ? 'file' : $base;
+        } else {
+            $name = ($base === '' ? 'file' : $base) . '.' . $ext;
+        }
+    }
+
+    // Trim stray dots/underscores from the start and end
+    $name = trim($name, "._");
+
+    // Enforce a maximum length (common filesystem limit is 255 bytes)
+    $maxLen = 255;
+    if (strlen($name) > $maxLen) {
+        $dotPos = strrpos($name, '.');
+        if ($dotPos !== false) {
+            $ext  = substr($name, $dotPos);
+            $base = substr($name, 0, $dotPos);
+            $baseMaxLen = $maxLen - strlen($ext);
+            if ($baseMaxLen < 1) {
+                // Fallback if extension is unusually long
+                $name = substr($name, 0, $maxLen);
+            } else {
+                $name = substr($base, 0, $baseMaxLen) . $ext;
+            }
+        } else {
+            $name = substr($name, 0, $maxLen);
+        }
+    }
+
+    // Ensure we never return an empty or invalid filename
+    if ($name === '' || $name === '.' || $name === '..') {
+        $name = 'file';
+    }
+
     return $name;
 }
 function safe_id_segment($value)
diff --git a/public_html/aulatek/api/comedor.php b/public_html/aulatek/api/comedor.php
index 7a50caa..f95a87d 100644
--- a/public_html/aulatek/api/comedor.php
+++ b/public_html/aulatek/api/comedor.php
@@ -1,7 +1,7 @@
 <?php
 header("Content-Type: application/json; charset=utf-8");
-require_once "_incl/auth_redir.php";
-require_once "../_incl/tools.security.php";
+require_once "../_incl/auth_redir.php";
+require_once "../../_incl/tools.security.php";
 require_once "../../_incl/db.php";
 
 // Check permissions
@@ -72,11 +72,6 @@ function blank_menu() {
     ];
 }
 
-function safe_filename($name) {
-    $name = basename($name);
-    return preg_replace("/[^a-zA-Z0-9._-]/", "_", $name);
-}
-
 // Routes
 switch ($action) {
     case "get_menu_types":
diff --git a/public_html/aulatek/comedor.php b/public_html/aulatek/comedor.php
index 72734ff..fb0543e 100644
--- a/public_html/aulatek/comedor.php
+++ b/public_html/aulatek/comedor.php
@@ -98,67 +98,6 @@ $canEdit = in_array("sysadmin:access", $_SESSION["auth_data"]["permissions"] ??
 $saveNotice = "";
 $uploadErrors = [];
 
-function safe_filename($name)
-{
-	// Normalize to base name to avoid directory traversal
-	$name = basename($name);
-
-	// Best-effort normalize encoding to avoid odd Unicode tricks
-	if (function_exists('mb_convert_encoding')) {
-		$name = mb_convert_encoding($name, 'UTF-8', 'UTF-8');
-	}
-
-	// Replace disallowed characters with underscore
-	$name = preg_replace("/[^a-zA-Z0-9._-]/", "_", $name);
-	// Collapse multiple underscores introduced by replacement
-	$name = preg_replace('/_+/', '_', $name);
-
-	// Remove leading dots to avoid hidden/special files like ".htaccess"
-	$name = ltrim($name, '.');
-
-	// Ensure there is at most one dot in the filename to prevent extension confusion
-	if (substr_count($name, '.') > 1) {
-		$parts = explode('.', $name);
-		$ext   = array_pop($parts);
-		$base  = implode('_', $parts);
-		// Ensure extension is not empty
-		if ($ext === '') {
-			$name = $base === '' ? 'file' : $base;
-		} else {
-			$name  = ($base === '' ? 'file' : $base) . '.' . $ext;
-		}
-	}
-
-	// Trim stray dots/underscores from the start and end
-	$name = trim($name, "._");
-
-	// Enforce a maximum length (common filesystem limit is 255 bytes)
-	$maxLen = 255;
-	if (strlen($name) > $maxLen) {
-		$dotPos = strrpos($name, '.');
-		if ($dotPos !== false) {
-			$ext  = substr($name, $dotPos);
-			$base = substr($name, 0, $dotPos);
-			$baseMaxLen = $maxLen - strlen($ext);
-			if ($baseMaxLen < 1) {
-				// Fallback if extension is unusually long
-				$name = substr($name, 0, $maxLen);
-			} else {
-				$name = substr($base, 0, $baseMaxLen) . $ext;
-			}
-		} else {
-			$name = substr($name, 0, $maxLen);
-		}
-	}
-
-	// Ensure we never return an empty or invalid filename
-	if ($name === '' || $name === '.' || $name === '..') {
-		$name = 'file';
-	}
-
-	return $name;
-}
-
 function handle_image_upload($fieldName, $targetBaseName, $baseDir, &$uploadErrors)
 {
 	if (!isset($_FILES[$fieldName]) || $_FILES[$fieldName]["error"] !== UPLOAD_ERR_OK) {
diff --git a/public_html/aulatek/proyectos.php b/public_html/aulatek/proyectos.php
index c4599e9..b0721f7 100644
--- a/public_html/aulatek/proyectos.php
+++ b/public_html/aulatek/proyectos.php
@@ -34,29 +34,6 @@ if (!is_dir($proyectos_dir)) {
 }
 
 // Helper functions
-function safe_filename($name)
-{
-  // Normalize to base name to avoid directory traversal
-  $name = basename($name);
-  // Replace disallowed characters with underscore
-  $name = preg_replace("/[^a-zA-Z0-9._-]/", "_", $name);
-  // Remove leading dots to avoid hidden/special files like ".htaccess"
-  $name = ltrim($name, '.');
-  // Ensure there is at most one dot in the filename to prevent extension confusion
-  if (substr_count($name, '.') > 1) {
-    $parts = explode('.', $name);
-    $ext   = array_pop($parts);
-    $base  = implode('_', $parts);
-    // Ensure extension is not empty
-    if ($ext === '') {
-      $name = $base === '' ? 'file' : $base;
-    } else {
-      $name  = ($base === '' ? 'file' : $base) . '.' . $ext;
-    }
-  }
-  return $name;
-}
-
 function safe_path_segment($value)
 {
   $value = basename((string)$value);