diff --git a/.cargo/config.toml b/.cargo/config.toml
index 0b2d8b4..5135434 100644
--- a/.cargo/config.toml
+++ b/.cargo/config.toml
@@ -1,2 +1,2 @@
-[build]
+[target.'cfg(target_arch = "x86_64")']
 rustflags = ["-C", "target-cpu=x86-64-v3"]