diff --git a/boot.php b/boot.php
index 24e6912797..222011f6b7 100644
--- a/boot.php
+++ b/boot.php
@@ -854,3 +854,22 @@ function validate_include(&$file)
 	// Simply return flag
 	return $valid;
 }
+
+/**
+ * PHP 5 compatible dirname() with count parameter
+ *
+ * @see http://php.net/manual/en/function.dirname.php#113193
+ *
+ * @deprecated with PHP 7
+ * @param string $path
+ * @param int    $levels
+ * @return string
+ */
+function rdirname($path, $levels = 1)
+{
+	if ($levels > 1) {
+		return dirname(rdirname($path, --$levels));
+	} else {
+		return dirname($path);
+	}
+}
\ No newline at end of file
diff --git a/src/App.php b/src/App.php
index 45d743b0d6..261c3e74cb 100644
--- a/src/App.php
+++ b/src/App.php
@@ -523,7 +523,7 @@ class App
 		if (!empty($relative_script_path)) {
 			// Module
 			if (!empty($_SERVER['QUERY_STRING'])) {
-				$path = trim(dirname($relative_script_path, substr_count(trim($_SERVER['QUERY_STRING'], '/'), '/') + 1), '/');
+				$path = trim(rdirname($relative_script_path, substr_count(trim($_SERVER['QUERY_STRING'], '/'), '/') + 1), '/');
 			} else {
 				// Root page
 				$path = trim($relative_script_path, '/');