diff --git a/internal/servers/controller/internal/metric/api.go b/internal/servers/controller/internal/metric/api.go
index 8952c9391c..74432c8353 100644
--- a/internal/servers/controller/internal/metric/api.go
+++ b/internal/servers/controller/internal/metric/api.go
@@ -227,7 +227,7 @@ func InstrumentApiHandler(wrapped http.Handler) http.Handler {
 		promhttp.InstrumentHandlerDuration(
 			httpRequestLatency.MustCurryWith(l),
 			promhttp.InstrumentHandlerRequestSize(
-				httpResponseSize.MustCurryWith(l),
+				httpRequestSize.MustCurryWith(l),
 				promhttp.InstrumentHandlerResponseSize(
 					httpResponseSize.MustCurryWith(l),
 					wrapped,