diff --git a/src/mod/languages/mod_spidermonkey_curl/mod_spidermonkey_curl.c b/src/mod/languages/mod_spidermonkey_curl/mod_spidermonkey_curl.c
index b13090f2e8..17a772360c 100644
--- a/src/mod/languages/mod_spidermonkey_curl/mod_spidermonkey_curl.c
+++ b/src/mod/languages/mod_spidermonkey_curl/mod_spidermonkey_curl.c
@@ -113,6 +113,7 @@ static JSBool curl_run(JSContext * cx, JSObject * obj, uintN argc, jsval * argv,
 	long httpRes = 0;
 	struct curl_slist *headers = NULL;
 	int32 timeout = 0;
+	char ct[80] = "Content-Type: application/x-www-form-urlencoded";
 
 	if (argc < 2 || !co) {
 		return JS_FALSE;
@@ -122,12 +123,17 @@ static JSBool curl_run(JSContext * cx, JSObject * obj, uintN argc, jsval * argv,
 	method = JS_GetStringBytes(JS_ValueToString(cx, argv[0]));
 	url = JS_GetStringBytes(JS_ValueToString(cx, argv[1]));
 
+	if (argc > 2) {
+		char *content_type = JS_GetStringBytes(JS_ValueToString(cx, argv[2]));
+		snprintf(ct, sizeof(ct), "Content-Type: %s", content_type);
+	}
+
 	co->curl_handle = curl_easy_init();
 	if (!strncasecmp(url, "https", 5)) {
 		curl_easy_setopt(co->curl_handle, CURLOPT_SSL_VERIFYPEER, 0);
 		curl_easy_setopt(co->curl_handle, CURLOPT_SSL_VERIFYHOST, 0);
 	}
-	headers = curl_slist_append(headers, "Content-Type: application/x-www-form-urlencoded");
+	headers = curl_slist_append(headers, ct);
 
 	if (argc > 2) {
 		data = JS_GetStringBytes(JS_ValueToString(cx, argv[2]));