2 files changed, 2 insertions, 2 deletions
diff --git a/src/cryptonote_basic/cryptonote_basic_impl.cpp b/src/cryptonote_basic/cryptonote_basic_impl.cpp
index c4e10851e..f10e0d86e 100644
--- a/src/cryptonote_basic/cryptonote_basic_impl.cpp
+++ b/src/cryptonote_basic/cryptonote_basic_impl.cpp
@@ -322,7 +322,7 @@ namespace cryptonote {
 }
 
 //--------------------------------------------------------------------------------
-bool parse_hash256(const std::string str_hash, crypto::hash& hash)
+bool parse_hash256(const std::string &str_hash, crypto::hash& hash)
 {
   std::string buf;
   bool res = epee::string_tools::parse_hexstr_to_binbuff(str_hash, buf);
diff --git a/src/cryptonote_basic/cryptonote_basic_impl.h b/src/cryptonote_basic/cryptonote_basic_impl.h
index c804a88fa..0b8131a7a 100644
--- a/src/cryptonote_basic/cryptonote_basic_impl.h
+++ b/src/cryptonote_basic/cryptonote_basic_impl.h
@@ -124,5 +124,5 @@ namespace cryptonote {
   bool operator ==(const cryptonote::block& a, const cryptonote::block& b);
 }
 
-bool parse_hash256(const std::string str_hash, crypto::hash& hash);
+bool parse_hash256(const std::string &str_hash, crypto::hash& hash);