diff --git a/compiler/rustc_target/src/spec/mod.rs b/compiler/rustc_target/src/spec/mod.rs
index 810d8aa8200..7e84127c93a 100644
--- a/compiler/rustc_target/src/spec/mod.rs
+++ b/compiler/rustc_target/src/spec/mod.rs
@@ -1790,7 +1790,7 @@ supported_targets! {
     ("x86_64-unknown-l4re-uclibc", x86_64_unknown_l4re_uclibc),
 
     ("aarch64-unknown-redox", aarch64_unknown_redox),
-    ("i686-unknown-redox", i686_unknown_redox),
+    ("i586-unknown-redox", i586_unknown_redox),
     ("x86_64-unknown-redox", x86_64_unknown_redox),
 
     ("i386-apple-ios", i386_apple_ios),
diff --git a/compiler/rustc_target/src/spec/targets/i686_unknown_redox.rs b/compiler/rustc_target/src/spec/targets/i586_unknown_redox.rs
similarity index 94%
rename from compiler/rustc_target/src/spec/targets/i686_unknown_redox.rs
rename to compiler/rustc_target/src/spec/targets/i586_unknown_redox.rs
index bfe52a330d3..29ef8b883a1 100644
--- a/compiler/rustc_target/src/spec/targets/i686_unknown_redox.rs
+++ b/compiler/rustc_target/src/spec/targets/i586_unknown_redox.rs
@@ -10,7 +10,7 @@ pub(crate) fn target() -> Target {
     base.stack_probes = StackProbeType::Call;
 
     Target {
-        llvm_target: "i686-unknown-redox".into(),
+        llvm_target: "i586-unknown-redox".into(),
         metadata: crate::spec::TargetMetadata {
             description: None,
             tier: None,
diff --git a/src/doc/rustc/src/platform-support.md b/src/doc/rustc/src/platform-support.md
index a086498fcbd..28bb15952d0 100644
--- a/src/doc/rustc/src/platform-support.md
+++ b/src/doc/rustc/src/platform-support.md
@@ -311,12 +311,12 @@ target | std | host | notes
 [`i386-apple-ios`](platform-support/apple-ios.md) | ✓ |  | 32-bit x86 iOS (Penryn) [^x86_32-floats-return-ABI]
 [`i586-pc-nto-qnx700`](platform-support/nto-qnx.md) | * |  | 32-bit x86 QNX Neutrino 7.0 RTOS (Pentium 4) [^x86_32-floats-return-ABI]
 [`i586-unknown-netbsd`](platform-support/netbsd.md) | ✓ |  | 32-bit x86 (original Pentium) [^x86_32-floats-x87]
+[`i586-unknown-redox`](platform-support/redox.md) | ✓ |  | 32-bit x86 Redox OS (PentiumPro) [^x86_32-floats-x87]
 [`i686-apple-darwin`](platform-support/apple-darwin.md) | ✓ | ✓ | 32-bit macOS (10.12+, Sierra+, Penryn) [^x86_32-floats-return-ABI]
 `i686-unknown-haiku` | ✓ | ✓ | 32-bit Haiku (Pentium 4) [^x86_32-floats-return-ABI]
 [`i686-unknown-hurd-gnu`](platform-support/hurd.md) | ✓ | ✓ | 32-bit GNU/Hurd (Pentium 4) [^x86_32-floats-return-ABI]
 [`i686-unknown-netbsd`](platform-support/netbsd.md) | ✓ | ✓ | NetBSD/i386 (Pentium 4) [^x86_32-floats-return-ABI]
 [`i686-unknown-openbsd`](platform-support/openbsd.md) | ✓ | ✓ | 32-bit OpenBSD (Pentium 4) [^x86_32-floats-return-ABI]
-[`i686-unknown-redox`](platform-support/redox.md) | ✓ |  | i686 Redox OS (PentiumPro) [^x86_32-floats-x87]
 `i686-uwp-windows-gnu` | ✓ |  | [^x86_32-floats-return-ABI]
 [`i686-uwp-windows-msvc`](platform-support/uwp-windows-msvc.md) | ✓ |  | [^x86_32-floats-return-ABI]
 [`i686-win7-windows-gnu`](platform-support/win7-windows-gnu.md) | ✓ |   | 32-bit Windows 7 support [^x86_32-floats-return-ABI]
diff --git a/src/doc/rustc/src/platform-support/redox.md b/src/doc/rustc/src/platform-support/redox.md
index 1b3321956ef..2bba92d504c 100644
--- a/src/doc/rustc/src/platform-support/redox.md
+++ b/src/doc/rustc/src/platform-support/redox.md
@@ -9,7 +9,7 @@ Target triplets available so far:
 
 - `x86_64-unknown-redox` (tier 2)
 - `aarch64-unknown-redox` (tier 3)
-- `i686-unknown-redox` (tier 3)
+- `i586-unknown-redox` (tier 3)
 
 ## Target maintainers
 
@@ -36,7 +36,7 @@ target = [
     "<HOST_TARGET>",
     "x86_64-unknown-redox",
     "aarch64-unknown-redox",
-    "i686-unknown-redox",
+    "i586-unknown-redox",
 ]
 ```
 
diff --git a/src/tools/build-manifest/src/main.rs b/src/tools/build-manifest/src/main.rs
index 27b8c038ad2..cd5ca74f8ad 100644
--- a/src/tools/build-manifest/src/main.rs
+++ b/src/tools/build-manifest/src/main.rs
@@ -100,6 +100,7 @@ static TARGETS: &[&str] = &[
     "i586-pc-windows-msvc",
     "i586-unknown-linux-gnu",
     "i586-unknown-linux-musl",
+    "i586-unknown-redox",
     "i686-apple-darwin",
     "i686-linux-android",
     "i686-pc-windows-gnu",
@@ -108,7 +109,6 @@ static TARGETS: &[&str] = &[
     "i686-unknown-freebsd",
     "i686-unknown-linux-gnu",
     "i686-unknown-linux-musl",
-    "i686-unknown-redox",
     "i686-unknown-uefi",
     "loongarch64-unknown-linux-gnu",
     "loongarch64-unknown-linux-musl",
diff --git a/tests/assembly/targets/targets-elf.rs b/tests/assembly/targets/targets-elf.rs
index 0ff886653a4..b5c0ee5a107 100644
--- a/tests/assembly/targets/targets-elf.rs
+++ b/tests/assembly/targets/targets-elf.rs
@@ -228,6 +228,9 @@
 //@ revisions: i586_unknown_netbsd
 //@ [i586_unknown_netbsd] compile-flags: --target i586-unknown-netbsd
 //@ [i586_unknown_netbsd] needs-llvm-components: x86
+//@ revisions: i586_unknown_redox
+//@ [i586_unknown_redox] compile-flags: --target i586-unknown-redox
+//@ [i586_unknown_redox] needs-llvm-components: x86
 //@ revisions: i686_linux_android
 //@ [i686_linux_android] compile-flags: --target i686-linux-android
 //@ [i686_linux_android] needs-llvm-components: x86
@@ -252,9 +255,6 @@
 //@ revisions: i686_unknown_openbsd
 //@ [i686_unknown_openbsd] compile-flags: --target i686-unknown-openbsd
 //@ [i686_unknown_openbsd] needs-llvm-components: x86
-//@ revisions: i686_unknown_redox
-//@ [i686_unknown_redox] compile-flags: --target i686-unknown-redox
-//@ [i686_unknown_redox] needs-llvm-components: x86
 //@ revisions: i686_wrs_vxworks
 //@ [i686_wrs_vxworks] compile-flags: --target i686-wrs-vxworks
 //@ [i686_wrs_vxworks] needs-llvm-components: x86