diff --git a/llmproxymetrics.go b/llmproxymetrics.go
index 3150bd1..52b1643 100644
--- a/llmproxymetrics.go
+++ b/llmproxymetrics.go
@@ -42,10 +42,12 @@ func createProxy(target *url.URL) func(http.ResponseWriter, *http.Request) {
 		var jsonData map[string]interface{}
 		json.NewDecoder(r.Body).Decode(&jsonData)
 
-		if jsonData["stream"].(bool) == false {
-			notStreamed.Inc()
-		} else {
-			streamed.Inc()
+		if jsonData["stream"] != nil {
+			if !jsonData["stream"].(bool) {
+				notStreamed.Inc()
+			} else {
+				streamed.Inc()
+			}
 		}
 
 		modifyResponse := func(response *http.Response) error {