diff --git a/api/main.go b/api/main.go
index 6311d20..0aa8744 100644
--- a/api/main.go
+++ b/api/main.go
@@ -129,6 +129,7 @@ func generateJSON(ip string) (body, error) {
 
 func handleRequest(w http.ResponseWriter, r *http.Request) {
 	w.Header().Add("Access-Control-Allow-Origin", "*")
+	w.Header().Add("Content-Type", "application/json")
 
 	sourceIP := func() string {
 		if q := r.URL.Query().Get("q"); q != "" {