diff --git a/lang/cem/cemcom.ansi/blocks.c b/lang/cem/cemcom.ansi/blocks.c
index 08583fce8..08e5930bc 100644
--- a/lang/cem/cemcom.ansi/blocks.c
+++ b/lang/cem/cemcom.ansi/blocks.c
@@ -153,8 +153,8 @@ copy_block(sz, al)
 		src = LocalPtrVar();
 		dst = LocalPtrVar();
 
-		StoreLocal(src, pointer_size);
 		StoreLocal(dst, pointer_size);
+		StoreLocal(src, pointer_size);
 		copy_loop(sz, src, dst);
 		FreeLocal(dst);
 		FreeLocal(src);