diff --git a/arch/arm/SAMD21/SAMD21A/mcu/inc/sam.h b/arch/arm/SAMD21/SAMD21A/mcu/inc/sam.h
index 4f62a0a7..7a510c69 100644
--- a/arch/arm/SAMD21/SAMD21A/mcu/inc/sam.h
+++ b/arch/arm/SAMD21/SAMD21A/mcu/inc/sam.h
@@ -29,7 +29,6 @@
 
 #ifndef _SAM_
 #define _SAM_
-
 #if   defined(__SAMD21E17A__) || defined(__ATSAMD21E17A__)
   #include "samd21e17a.h"
 #elif defined(__SAMD21J18A__) || defined(__ATSAMD21J18A__)