diff --git a/daemon/internal/newrelic/utilization/utilization_hash.go b/daemon/internal/newrelic/utilization/utilization_hash.go
index f12c29148..7791dfee8 100644
--- a/daemon/internal/newrelic/utilization/utilization_hash.go
+++ b/daemon/internal/newrelic/utilization/utilization_hash.go
@@ -55,7 +55,7 @@ type Data struct {
 }
 
 type docker struct {
-	ID string `json:"id",omitempty`
+	ID string `json:"id,omitempty"`
 }
 
 type vendors struct {