diff --git a/cores/arduino/Print.cpp b/cores/arduino/Print.cpp
index f6e499b..9a6b964 100644
--- a/cores/arduino/Print.cpp
+++ b/cores/arduino/Print.cpp
@@ -53,7 +53,7 @@ size_t Print::print(const __FlashStringHelper *ifsh)
 
 size_t Print::print(const String &s)
 {
-  return write(reinterpret_cast<const uint8_t*>(s.c_str()), s.length());
+  return write(s.c_str(), s.length());
 }
 
 size_t Print::print(const char str[])