diff --git a/src/interfaces/node.h b/src/interfaces/node.h
--- a/src/interfaces/node.h
+++ b/src/interfaces/node.h
@@ -52,6 +52,10 @@
     virtual bool parseParameters(int argc, const char *const argv[],
                                  std::string &error) = 0;
 
+    //! Set a command line argument
+    virtual void forceSetArg(const std::string &arg,
+                             const std::string &value) = 0;
+
     //! Set a command line argument if it doesn't already have a value
     virtual bool softSetArg(const std::string &arg,
                             const std::string &value) = 0;
diff --git a/src/interfaces/node.cpp b/src/interfaces/node.cpp
--- a/src/interfaces/node.cpp
+++ b/src/interfaces/node.cpp
@@ -73,6 +73,10 @@
         bool readConfigFiles(std::string &error) override {
             return gArgs.ReadConfigFiles(error, true);
         }
+        void forceSetArg(const std::string &arg,
+                         const std::string &value) override {
+            gArgs.ForceSetArg(arg, value);
+        }
         bool softSetArg(const std::string &arg,
                         const std::string &value) override {
             return gArgs.SoftSetArg(arg, value);