diff --git a/include/fc/string.hpp b/include/fc/string.hpp
index b262c90..b0303ef 100644
--- a/include/fc/string.hpp
+++ b/include/fc/string.hpp
@@ -20,8 +20,6 @@ namespace fc
   inline fc::string to_string( uint32_t v ){ return to_string( uint64_t(v) ); }
 #ifdef __APPLE__
   inline fc::string to_string( size_t s) { return to_string(uint64_t(s)); }
-#elif defined( WIN32 )
-  inline fc::string to_string( size_t s ) { return to_string(uint64_t(s)); }
 #endif
 
   typedef fc::optional<fc::string> ostring;