diff --git a/rust.changes b/rust.changes
index 94fc6b2..a479bae 100644
--- a/rust.changes
+++ b/rust.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Wed Jun 14 06:23:20 UTC 2017 - luke.nukem.jones@gmail.com
+
+- Change i586 build to produce i686 target instead of i586 so that
+  x86 Firefox can be built with Rust.
+
 -------------------------------------------------------------------
 Thu Jun  8 21:48:54 UTC 2017 - luke.nukem.jones@gmail.com
 
diff --git a/rust.spec b/rust.spec
index 142b5e7..d6f6e30 100644
--- a/rust.spec
+++ b/rust.spec
@@ -40,7 +40,7 @@
 %global _arch x86_64
 %endif
 %ifarch %{ix86}
-%global _arch i586
+%global _arch i686
 %endif
 %global rust_triple %{_arch}-unknown-linux-%{abi}
 %global dl_url https://static.rust-lang.org/dist