--- a/compiler/rustc_target/src/spec/i686_unknown_linux_gnu.rs
+++ b/compiler/rustc_target/src/spec/i686_unknown_linux_gnu.rs
@@ -2,7 +2,7 @@
 
 pub fn target() -> Target {
     let mut base = super::linux_gnu_base::opts();
-    base.cpu = "pentium4".to_string();
+    base.cpu = "pentiumpro".to_string();
     base.max_atomic_width = Some(64);
     base.pre_link_args.entry(LinkerFlavor::Gcc).or_default().push("-m32".to_string());
     // don't use probe-stack=inline-asm until rust#83139 and rust#84667 are resolved