X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/d38fa49cb6cb3804c9bb17601688a62ba466b535..d475ea4394ba0e16f89300ebeb452cea7c2d9232:/LUFA/Drivers/Peripheral/SPI.h

diff --git a/LUFA/Drivers/Peripheral/SPI.h b/LUFA/Drivers/Peripheral/SPI.h
index d8d60ede5..66cdaf513 100644
--- a/LUFA/Drivers/Peripheral/SPI.h
+++ b/LUFA/Drivers/Peripheral/SPI.h
@@ -102,7 +102,9 @@
 				          (PrescalerMask & ~SPI_USE_DOUBLESPEED));
 				
 				if (PrescalerMask & SPI_USE_DOUBLESPEED)
-				  SPSR = (1 << SPI2X);
+				  SPSR |= (1 << SPI2X);
+				else
+				  SPSR &= ~(1 << SPI2X);
 			}
 			
 			/** Sends and receives a byte through the SPI interface, blocking until the transfer is complete.