diff --git a/ext/v8/converters.cpp b/ext/v8/converters.cpp
index ff311b3..367e50b 100644
--- a/ext/v8/converters.cpp
+++ b/ext/v8/converters.cpp
@@ -1,4 +1,21 @@
 #include "converters.h"
 
-convert_v8_to_rb_t V82RB;
-convert_rb_to_v8_t RB2V8;
+VALUE V82RB(v8::Handle<v8::Value>& value) {
+  convert_v8_to_rb_t convert;
+  return convert(value);
+}
+
+v8::Local<v8::Value> RB2V8(VALUE value) {
+  convert_rb_to_v8_t convert;
+  return convert(value);
+}
+
+std::string RB2String(VALUE value) {
+  convert_rb_to_string_t convert;
+  return convert(value);
+}
+
+std::string V82String(v8::Handle<v8::Value>& value) {
+  convert_v8_to_string_t convert;
+  return convert(value);
+}
\ No newline at end of file
diff --git a/ext/v8/converters.h b/ext/v8/converters.h
index 160a6df..c0f79cb 100644
--- a/ext/v8/converters.h
+++ b/ext/v8/converters.h
@@ -4,6 +4,7 @@
 #include "convert_ruby.h"
 #include "convert_string.h"
 #include "convert_v8.h"
+#include <cstring>
 
 typedef RubyValueSource<V8LocalDest, v8::Local<v8::Value> > convert_rb_to_v8_t; 
 typedef V8HandleSource<RubyValueDest, VALUE> convert_v8_to_rb_t;
@@ -11,7 +12,10 @@ typedef V8HandleSource<RubyValueDest, VALUE> convert_v8_to_rb_t;
 typedef RubyValueSource<StringDest, std::string> convert_rb_to_string_t;
 typedef V8HandleSource<StringDest, std::string> convert_v8_to_string_t;
 
-extern convert_v8_to_rb_t V82RB;
-extern convert_rb_to_v8_t RB2V8;
+VALUE V82RB(v8::Handle<v8::Value>& value);
+v8::Local<v8::Value> RB2V8(VALUE value);
+
+std::string RB2String(VALUE value);
+std::string V82String(v8::Handle<v8::Value>& value);
 
 #endif
\ No newline at end of file