diff --git a/src/base58.h b/src/base58.h
index 269950d1..e0ebbd9b 100644
--- a/src/base58.h
+++ b/src/base58.h
@@ -214,7 +214,9 @@ class CBase58Data {
     }
 
     std::string ToString() const {
-        std::vector<unsigned char> vch(1, nVersion);
+        std::vector<unsigned char> vch;
+        vch.resize(1, nVersion);
+        vch.shrink_to_fit();
         vch.insert(vch.end(), vchData.begin(), vchData.end());
         return EncodeBase58Check(vch);
     }