diff --git a/src/WebAPIService.cpp b/src/WebAPIService.cpp
index e986adbf9..3aee6c42a 100644
--- a/src/WebAPIService.cpp
+++ b/src/WebAPIService.cpp
@@ -101,7 +101,7 @@ void WebAPIService::webAPIService(AsyncWebServerRequest * request) {
                ok ? PSTR("OK") : PSTR("Invalid"));
     EMSESP::logger().debug(debug.c_str());
     if (json.size()) {
-        char buffer2[EMSESP_MAX_JSON_SIZE_DYN];
+        std::string buffer2;
         serializeJson(doc, buffer2);
         EMSESP::logger().debug("json (max 255 chars): %s", buffer2);
     }