diff --git a/src/qt/bitcoin.cpp b/src/qt/bitcoin.cpp
--- a/src/qt/bitcoin.cpp
+++ b/src/qt/bitcoin.cpp
@@ -713,7 +713,10 @@
     }
 #ifdef ENABLE_WALLET
     // Parse URIs on command line -- this can affect Params()
-    PaymentServer::ipcParseCommandLine(argc, argv);
+    std::string network = PaymentServer::ipcParseCommandLine(argc, argv);
+    if (!network.empty()) {
+        SelectParams(network);
+    }
 #endif
 
     QScopedPointer<const NetworkStyle> networkStyle(NetworkStyle::instantiate(
diff --git a/src/qt/paymentserver.h b/src/qt/paymentserver.h
--- a/src/qt/paymentserver.h
+++ b/src/qt/paymentserver.h
@@ -57,7 +57,7 @@
 public:
     // Parse URIs on command line
     // Returns false on error
-    static void ipcParseCommandLine(int argc, char *argv[]);
+    static std::string ipcParseCommandLine(int argc, char *argv[]);
 
     // Returns true if there were URIs on the command line which were
     // successfully sent to an already-running process.
diff --git a/src/qt/paymentserver.cpp b/src/qt/paymentserver.cpp
--- a/src/qt/paymentserver.cpp
+++ b/src/qt/paymentserver.cpp
@@ -17,6 +17,7 @@
 #include "wallet/wallet.h"
 
 #include <cstdlib>
+#include <tuple>
 
 #include <openssl/x509_vfy.h>
 
@@ -199,6 +200,35 @@
     //   "certificate stapling" with server-side caching is more efficient
 }
 
+static std::pair<bool, std::string> ipcParseURI(const QString &arg) {
+
+    std::vector<std::string> networks = {CBaseChainParams::MAIN,
+                                         CBaseChainParams::TESTNET,
+                                         CBaseChainParams::REGTEST};
+
+    for (std::string net : networks) {
+        const CChainParams &params(Params(net));
+        const QString scheme = GUIUtil::bitcoinURIScheme(params, true);
+
+        if (!arg.startsWith(scheme + ":", Qt::CaseInsensitive)) {
+            continue;
+        }
+
+        SendCoinsRecipient r;
+        if (!GUIUtil::parseBitcoinURI(scheme, arg, &r)) {
+            return {false, std::string{}};
+        }
+
+        if (!IsValidDestinationString(r.address.toStdString(), params)) {
+            return {false, std::string{}};
+        }
+
+        savedPaymentRequests.append(arg);
+        return {true, net};
+    }
+    return {false, std::string{}};
+}
+
 //
 // Sending to the server is done synchronously, at startup.
 // If the server isn't already running, startup continues, and the items in
@@ -207,34 +237,18 @@
 // Warning: ipcSendCommandLine() is called early in init, so don't use "Q_EMIT
 // message()", but "QMessageBox::"!
 //
-void PaymentServer::ipcParseCommandLine(int argc, char *argv[]) {
+std::string PaymentServer::ipcParseCommandLine(int argc, char *argv[]) {
+
+    std::string network;
+
     for (int i = 1; i < argc; i++) {
         QString arg(argv[i]);
         if (arg.startsWith("-")) continue;
 
-        QString scheme = GUIUtil::bitcoinURIScheme(Params(), false);
-        // If the bitcoincash: URI contains a payment request, we are not able
-        // to detect the network as that would require fetching and parsing the
-        // payment request. That means clicking such an URI which contains a
-        // testnet payment request will start a mainnet instance and throw a
-        // "wrong network" error.
-        if (arg.startsWith(scheme + ":",
-                           Qt::CaseInsensitive)) // bitcoincash: URI
-        {
-            savedPaymentRequests.append(arg);
-
-            SendCoinsRecipient r;
-            if (GUIUtil::parseBitcoinURI(scheme, arg, &r) &&
-                !r.address.isEmpty()) {
-                if (IsValidDestinationString(r.address.toStdString(),
-                                             Params(CBaseChainParams::MAIN))) {
-                    SelectParams(CBaseChainParams::MAIN);
-                } else if (IsValidDestinationString(
-                               r.address.toStdString(),
-                               Params(CBaseChainParams::TESTNET))) {
-                    SelectParams(CBaseChainParams::TESTNET);
-                }
-            }
+        bool parseOK;
+        std::tie(parseOK, network) = ipcParseURI(arg);
+        if (parseOK) {
+            continue;
         } else if (QFile::exists(arg)) {
             // Filename
             savedPaymentRequests.append(arg);
@@ -255,6 +269,7 @@
                        << arg;
         }
     }
+    return network;
 }
 
 //
@@ -392,7 +407,7 @@
     }
 
     // bitcoincash: URI
-    QString scheme = GUIUtil::bitcoinURIScheme(Params(), false);
+    QString scheme = GUIUtil::bitcoinURIScheme(Params(), true);
     if (s.startsWith(scheme + ":", Qt::CaseInsensitive)) {
 #if QT_VERSION < 0x050000
         QUrl uri(s);