diff --git a/README.md b/README.md
index ef8298c..161de56 100644
--- a/README.md
+++ b/README.md
@@ -13,4 +13,4 @@ The program makes the terminal use non-canonical input and output by using termi
 Only tested with the combination of
 - GCC
 - Linux
-- x86 CPU
+- x86-64 CPU