2 files changed, 2 insertions, 2 deletions
diff --git a/src/common/base58.cpp b/src/common/base58.cpp
index b28a04f20..432105da4 100644
--- a/src/common/base58.cpp
+++ b/src/common/base58.cpp
@@ -235,7 +235,7 @@ namespace tools
       return encode(buf);
     }
 
-    bool decode_addr(std::string addr, uint64_t& tag, std::string& data)
+    bool decode_addr(const std::string &addr, uint64_t& tag, std::string& data)
     {
       std::string addr_data;
       bool r = decode(addr, addr_data);
diff --git a/src/common/base58.h b/src/common/base58.h
index 02ca96956..69611859d 100644
--- a/src/common/base58.h
+++ b/src/common/base58.h
@@ -41,6 +41,6 @@ namespace tools
     bool decode(const std::string& enc, std::string& data);
 
     std::string encode_addr(uint64_t tag, const std::string& data);
-    bool decode_addr(std::string addr, uint64_t& tag, std::string& data);
+    bool decode_addr(const std::string &addr, uint64_t& tag, std::string& data);
   }
 }