diff --git a/cmake/arch.cmake b/cmake/arch.cmake
index 0b9df7e28..f7b096cf5 100644
--- a/cmake/arch.cmake
+++ b/cmake/arch.cmake
@@ -35,11 +35,11 @@ endif()
 
 if(NOT WSIZE)
 	if(ARCH STREQUAL X86)
-		set(AFLAGS "-m32")
+		set(AFLAGS "-m32" CACHE INTERNAL "Architecture flags")
 		set(WSIZE 32)
 	endif()
 	if(ARCH STREQUAL X64)
-		set(AFLAGS "-m64")
+		set(AFLAGS "-m64" CACHE INTERNAL "Architecture flags")
 		set(WSIZE 64)
 	endif()
 endif()