diff --git a/uart.hpp b/uart.hpp
index 3883855..2cb45c2 100644
--- a/uart.hpp
+++ b/uart.hpp
@@ -35,7 +35,7 @@ class Uart {
 	Uart &operator=(const Uart &) = delete;
 	Uart &operator=(Uart &&) = delete;
 
-	static void txByte(typename Driver::data_t byte) FORCE_INLINE
+	static void txByte(const typename Driver::data_t &byte)
 	{
 		Driver::txByte(byte);
 	}
@@ -50,7 +50,7 @@ class Uart {
 		return Driver::peek();
 	}
 
-	static void txString(const char *str) FORCE_INLINE
+	static void txString(const char *str)
 	{
 		static_assert(Driver::DATA_BITS == DataBits::EIGHT, "Strings are only supported with 8 data bits");
 
@@ -58,7 +58,7 @@ class Uart {
 			txByte(ch);
 	}
 
-	static void txString(const ::detail::FlashString *str) FORCE_INLINE
+	static void txString(const ::detail::FlashString *str)
 	{
 		static_assert(Driver::DATA_BITS == DataBits::EIGHT, "Strings are only supported with 8 data bits");
 
@@ -71,13 +71,13 @@ class Uart {
 	//////////////////////////////////////////////////////////////////////////
 	// Output stream overloads
 
-	Uart &operator<<(const char *str) FORCE_INLINE
+	Uart &operator<<(const char *str)
 	{
 		txString(str);
 		return *this;
 	}
 
-	Uart &operator<<(const ::detail::FlashString *str) FORCE_INLINE
+	Uart &operator<<(const ::detail::FlashString *str)
 	{
 		txString(str);
 		return *this;