diff --git a/main.go b/main.go
index 2ef667c..ce61e4f 100644
--- a/main.go
+++ b/main.go
@@ -47,7 +47,10 @@ func handleRoot(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	host := r.Header.Get("X-Real-IP")
+	host := r.Header.Get("CF-Connecting-IP")
+	if host == "" {
+		host = r.Header.Get("X-Real-IP")
+	}
 	if host == "" {
 		host = r.Header.Get("X-Forwarded-For")
 	}