diff --git a/src/currency_core/currency_format_utils_abstract.h b/src/currency_core/currency_format_utils_abstract.h
index da707683..ccbbf7c8 100644
--- a/src/currency_core/currency_format_utils_abstract.h
+++ b/src/currency_core/currency_format_utils_abstract.h
@@ -169,7 +169,7 @@ namespace currency
   }
   //---------------------------------------------------------------
   inline
-  const bool get_key_image_from_txin_v(const txin_v& in_v, crypto::key_image& result) noexcept
+  bool get_key_image_from_txin_v(const txin_v& in_v, crypto::key_image& result) noexcept
   {
     try
     {