diff --git a/server/WebApi.cpp b/server/WebApi.cpp
index b3bb4030..14ea493e 100644
--- a/server/WebApi.cpp
+++ b/server/WebApi.cpp
@@ -912,7 +912,7 @@ void installWebApi() {
 
         auto process = RtpSelector::Instance().getProcess(allArgs["stream_id"], false);
         if (!process) {
-            val["code"] = "-1";
+            val["code"] = -1;
             return;
         }