diff --git a/doc/JSON-RPC-interface.md b/doc/JSON-RPC-interface.md
index e5bed1d2ce..6cbb6ebd72 100644
--- a/doc/JSON-RPC-interface.md
+++ b/doc/JSON-RPC-interface.md
@@ -33,10 +33,10 @@ requests when multiple wallets are in use.
 
 ```sh
 # Get block count from the / endpoint when rpcuser=alice and rpcport=38332
-$ curl --user alice --data-binary '{"jsonrpc": "1.0", "id": "0", "method": "getblockcount", "params": []}' -H 'content-type: application/json;' localhost:38332/
+$ curl --user alice --data-binary '{"jsonrpc": "1.0", "id": "0", "method": "getblockcount", "params": []}' -H 'content-type: text/plain;' localhost:38332/
 
 # Get balance from the /wallet/walletname endpoint when rpcuser=alice, rpcport=38332 and rpcwallet=desc-wallet
-$ curl --user alice --data-binary '{"jsonrpc": "1.0", "id": "0", "method": "getbalance", "params": []}' -H 'content-type: application/json;' localhost:38332/wallet/desc-wallet
+$ curl --user alice --data-binary '{"jsonrpc": "1.0", "id": "0", "method": "getbalance", "params": []}' -H 'content-type: text/plain;' localhost:38332/wallet/desc-wallet
 
 ```