diff --git a/generator/src/WritePhpFunction.php b/generator/src/WritePhpFunction.php
index b34f6e9d..f552aae3 100644
--- a/generator/src/WritePhpFunction.php
+++ b/generator/src/WritePhpFunction.php
@@ -170,7 +170,7 @@ private function displayParamsWithType(array $params): string
             $paramsAsString[] = $paramAsString;
         }
 
-        return implode(', ', $paramsAsString);
+        return str_replace('\\\\', '\\', implode(', ', $paramsAsString));
     }
 
     private function printFunctionCall(Method $function): string