diff --git a/scripts/generate_rules.php b/scripts/generate_rules.php
index b9887890..f923e5da 100644
--- a/scripts/generate_rules.php
+++ b/scripts/generate_rules.php
@@ -41,10 +41,14 @@ function help($name) {
 	}
 
 	foreach(token_get_all($file_content) as $token) {
-		if ($token[0] !== T_STRING) {
+		if (!is_array($token)) {
 			continue;
 		}
 
+		if (isset($token[1][0]) && '\\' === $token[1][0]) {
+			$token[1] = substr($token[1], 1);
+		}
+
 		if (in_array($token[1], $functions_blacklist, true)) {
 			$output[] = 'sp.disable_function.function("' . $token[1] . '").filename("' . $name . '")' . $hash . '.allow();' . "\n";
 		}