1 files changed, 11 insertions, 11 deletions
diff --git a/src/chainparams.cpp b/src/chainparams.cpp
index 9c843f6e7e..02c417c38d 100644
--- a/src/chainparams.cpp
+++ b/src/chainparams.cpp
@@ -5,6 +5,7 @@
 
 #include "chainparams.h"
 
+#include "tinyformat.h"
 #include "util.h"
 #include "utilstrencodings.h"
 
@@ -260,28 +261,27 @@ const CChainParams &Params() {
     return *pCurrentParams;
 }
 
-CChainParams &Params(CBaseChainParams::Network network) {
-    switch (network) {
-        case CBaseChainParams::MAIN:
+CChainParams& Params(const std::string& chain)
+{
+    if (chain == CBaseChainParams::MAIN)
             return mainParams;
-        case CBaseChainParams::TESTNET:
+    else if (chain == CBaseChainParams::TESTNET)
             return testNetParams;
-        case CBaseChainParams::REGTEST:
+    else if (chain == CBaseChainParams::REGTEST)
             return regTestParams;
-        default:
-            assert(false && "Unimplemented network");
-            return mainParams;
-    }
+    else
+        throw std::runtime_error(strprintf("%s: Unknown chain %s.", __func__, chain));
 }
 
-void SelectParams(CBaseChainParams::Network network) {
+void SelectParams(const std::string& network)
+{
     SelectBaseParams(network);
     pCurrentParams = &Params(network);
 }
 
 bool SelectParamsFromCommandLine()
 {
-    CBaseChainParams::Network network = NetworkIdFromCommandLine();
+    std::string network = ChainNameFromCommandLine();
     if (network == CBaseChainParams::MAX_NETWORK_TYPES)
         return false;