diff --git a/projects/IoTCenter/Api/InfluxController.cs b/projects/IoTCenter/Api/InfluxController.cs
index a1f9b360..c0f73e5b 100644
--- a/projects/IoTCenter/Api/InfluxController.cs
+++ b/projects/IoTCenter/Api/InfluxController.cs
@@ -24,8 +24,7 @@ namespace IoTCenter.Api
         }
 
         [HttpPost]
-        [Produces("application/json")]
-        public async Task<string> Query()
+        public async Task<IActionResult> Query()
         {
             var server = this._cfg["influxdb:url"];
             var url = $"{server}/query";
@@ -44,7 +43,8 @@ namespace IoTCenter.Api
             }
             using var content = new FormUrlEncodedContent(data);
             var client = _httpClientFactory.CreateClient();
-            return await client.PostAsync(url, content).Result.Content.ReadAsStringAsync();
+            var result = await client.PostAsync(url, content).Result.Content.ReadAsStringAsync();
+            return Content(result, "application/json");
         }
 
         private string FromBase64(string value)