diff --git a/compiler/rustc_session/src/config.rs b/compiler/rustc_session/src/config.rs
index f2ee52262ade..6a813c4b8707 100644
--- a/compiler/rustc_session/src/config.rs
+++ b/compiler/rustc_session/src/config.rs
@@ -1832,7 +1832,7 @@ pub fn parse_target_triple(
                 early_error(error_format, &format!("target file {path:?} does not exist"))
             })
         }
-        Some(target) => TargetTriple::TargetTriple(target),
+        Some(target) => TargetTriple::from_alias(target),
         _ => TargetTriple::from_triple(host_triple()),
     }
 }
diff --git a/compiler/rustc_target/src/spec/i686_unknown_linux_gnu.rs b/compiler/rustc_target/src/spec/i686_unknown_linux_gnu.rs
index 73e536a7e4d9..af48d437533c 100644
--- a/compiler/rustc_target/src/spec/targets/i686_unknown_linux_gnu.rs
+++ b/compiler/rustc_target/src/spec/targets/i686_unknown_linux_gnu.rs
@@ -9,7 +9,7 @@ pub fn target() -> Target {
     base.stack_probes = StackProbeType::X86;
 
     Target {
-        llvm_target: "i686-unknown-linux-gnu".into(),
+        llvm_target: "i686-pc-linux-gnu".into(),
         pointer_width: 32,
         data_layout: "e-m:e-p:32:32-p270:32:32-p271:32:32-p272:64:64-\
             f64:32:64-f80:32-n8:16:32-S128"
diff --git a/compiler/rustc_target/src/spec/mod.rs b/compiler/rustc_target/src/spec/mod.rs
index 8909cf33af91..e5b5bce4c290 100644
--- a/compiler/rustc_target/src/spec/mod.rs
+++ b/compiler/rustc_target/src/spec/mod.rs
@@ -2876,6 +2876,15 @@ pub fn from_path(path: &Path) -> Result<Self, io::Error> {
         Ok(TargetTriple::TargetJson { path_for_rustdoc: canonicalized_path, triple, contents })
     }
 
+    /// Creates a target triple from its alias
+    pub fn from_alias(triple: String) -> Self {
+        match triple.as_str() {
+            "x86_64-pc-linux-gnu" => TargetTriple::from_triple("x86_64-unknown-linux-gnu"),
+            "i686-pc-linux-gnu" => TargetTriple::from_triple("i686-unknown-linux-gnu"),
+            _ => TargetTriple::TargetTriple(triple),
+        }
+    }
+
     /// Returns a string triple for this target.
     ///
     /// If this target is a path, the file name (without extension) is returned.
diff --git a/compiler/rustc_target/src/spec/x86_64_unknown_linux_gnu.rs b/compiler/rustc_target/src/spec/x86_64_unknown_linux_gnu.rs
index a91ab365b668..d605eb9ccf81 100644
--- a/compiler/rustc_target/src/spec/targets/x86_64_unknown_linux_gnu.rs
+++ b/compiler/rustc_target/src/spec/targets/x86_64_unknown_linux_gnu.rs
@@ -14,7 +14,7 @@ pub fn target() -> Target {
         | SanitizerSet::THREAD;
 
     Target {
-        llvm_target: "x86_64-unknown-linux-gnu".into(),
+        llvm_target: "x86_64-pc-linux-gnu".into(),
         pointer_width: 64,
         data_layout: "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
             .into(),