diff --git a/host/esp-t-sim7000g/src/main.cpp b/host/esp-t-sim7000g/src/main.cpp
index 49f58a464dcc95148c7608a559a1fafff0c87a7a..2a3fb775fdea5b55bb28951d93c5cac04271c367 100644
--- a/host/esp-t-sim7000g/src/main.cpp
+++ b/host/esp-t-sim7000g/src/main.cpp
@@ -26,7 +26,7 @@ static const std::string TAG_GSM = "GSM";
 #define SerialAT Serial1
 
 // See all AT commands, if wanted
-// #define DUMP_AT_COMMANDS
+#define DUMP_AT_COMMANDS
 
 // set GSM PIN, if any
 #define GSM_PIN ""
@@ -406,16 +406,13 @@ void loop()
 			client.println("Host: " + url);
 			// authorization
 			client.println("Authorization: Token " + token);
-			// json data
+			// line data
 			client.println("Content-Type: text/plain");
-			client.println("Accept: application/json");
 			// data length
 			client.println("Content-Length: " + String(lineData.length()));
 			client.println();
 			client.println(lineData);
 
-			client.println("Connection: close");
-			client.println();
 			// print response
 			while (client.connected()) {
 				String line = client.readStringUntil('\n');