X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/7f9f97c792dee6875fbca9806422bdd7d6c5a657..7d51e51c79c3af7791f4c3e8c7e5e8196a2c3f93:/LUFA/Drivers/Peripheral/Serial.h

diff --git a/LUFA/Drivers/Peripheral/Serial.h b/LUFA/Drivers/Peripheral/Serial.h
index ba466f314..d00f9c1c0 100644
--- a/LUFA/Drivers/Peripheral/Serial.h
+++ b/LUFA/Drivers/Peripheral/Serial.h
@@ -68,12 +68,12 @@
 			/** Macro for calculating the baud value from a given baud rate when the U2X (double speed) bit is
 			 *  not set.
 			 */
-			#define SERIAL_UBBRVAL(baud)    (((F_CPU / 16) / (baud)) - 1)
+			#define SERIAL_UBBRVAL(baud)    ((((F_CPU / 16) + (baud / 2)) / (baud)) - 1)
 
 			/** Macro for calculating the baud value from a given baud rate when the U2X (double speed) bit is
 			 *  set.
 			 */
-			#define SERIAL_2X_UBBRVAL(baud) (((F_CPU / 8) / (baud)) - 1)
+			#define SERIAL_2X_UBBRVAL(baud) ((((F_CPU / 8) + (baud / 2)) / (baud)) - 1)
 
 		/* Pseudo-Function Macros: */
 			#if defined(__DOXYGEN__)