diff --git a/cmake/arch.cmake b/cmake/arch.cmake
index e18e554e5..2d380adeb 100644
--- a/cmake/arch.cmake
+++ b/cmake/arch.cmake
@@ -42,7 +42,6 @@ endif()
 
 if(NOT WSIZE)
 	# Default is 64 bits.
-	set(AFLAGS "-m64")
 	set(WSIZE 64)
 	if(ARCH STREQUAL "X64" OR ARCH STREQUAL "A64")
 		set(AFLAGS "-m64")
@@ -52,7 +51,7 @@ if(NOT WSIZE)
 		set(WSIZE 32)
 	elseif(ARCH STREQUAL "MSP")
 		set(WSIZE 16)
-	elseif(ARCH STREQUAL "MSP")
+	elseif(ARCH STREQUAL "AVR")
 		set(WSIZE 8)
 	endif()
 endif()