diff --git a/src/chainparamsbase.h b/src/chainparamsbase.h
index 4369d0aef..33765f0fc 100644
--- a/src/chainparamsbase.h
+++ b/src/chainparamsbase.h
@@ -29,7 +29,7 @@ public:
 protected:
     CBaseChainParams() {}
 
-    int nRPCPort;
+    int nRPCPort = 0;
     std::string strDataDir;
 };