diff --git a/src/rpc/blockchain.cpp b/src/rpc/blockchain.cpp
index f538ddcc0..7c128885d 100644
--- a/src/rpc/blockchain.cpp
+++ b/src/rpc/blockchain.cpp
@@ -151,7 +151,7 @@ UniValue getblockcount(const JSONRPCRequest& request)
     if (request.fHelp || request.params.size() != 0)
         throw runtime_error(
             "getblockcount\n"
-            "\nReturns the number of blocks in the longest block chain.\n"
+            "\nReturns the number of blocks in the longest blockchain.\n"
             "\nResult:\n"
             "n    (numeric) The current block count\n"
             "\nExamples:\n"
@@ -168,7 +168,7 @@ UniValue getbestblockhash(const JSONRPCRequest& request)
     if (request.fHelp || request.params.size() != 0)
         throw runtime_error(
             "getbestblockhash\n"
-            "\nReturns the hash of the best (tip) block in the longest block chain.\n"
+            "\nReturns the hash of the best (tip) block in the longest blockchain.\n"
             "\nResult\n"
             "\"hex\"      (string) the block hash hex encoded\n"
             "\nExamples\n"
@@ -1027,7 +1027,7 @@ UniValue getblockchaininfo(const JSONRPCRequest& request)
     if (request.fHelp || request.params.size() != 0)
         throw runtime_error(
             "getblockchaininfo\n"
-            "Returns an object containing various state info regarding block chain processing.\n"
+            "Returns an object containing various state info regarding blockchain processing.\n"
             "\nResult:\n"
             "{\n"
             "  \"chain\": \"xxxx\",        (string) current network name as defined in BIP70 (main, test, regtest)\n"