diff --git a/src/librustc_back/target/i686_linux_android.rs b/src/librustc_back/target/i686_linux_android.rs
index f548fdad3cbed..3af5d68aceccb 100644
--- a/src/librustc_back/target/i686_linux_android.rs
+++ b/src/librustc_back/target/i686_linux_android.rs
@@ -12,7 +12,7 @@ use target::Target;
 
 pub fn target() -> Target {
     let mut base = super::android_base::opts();
-    base.cpu = "pentium4".to_string();
+    base.cpu = "i686".to_string();
 
     Target {
         llvm_target: "i686-linux-android".to_string(),
diff --git a/src/librustc_back/target/i686_pc_windows_gnu.rs b/src/librustc_back/target/i686_pc_windows_gnu.rs
index fa12bbd89323c..531cb894c8d95 100644
--- a/src/librustc_back/target/i686_pc_windows_gnu.rs
+++ b/src/librustc_back/target/i686_pc_windows_gnu.rs
@@ -12,7 +12,7 @@ use target::Target;
 
 pub fn target() -> Target {
     let mut base = super::windows_base::opts();
-    base.cpu = "pentium4".to_string();
+    base.cpu = "i686".to_string();
 
     // Mark all dynamic libraries and executables as compatible with the larger 4GiB address
     // space available to x86 Windows binaries on x86_64.
diff --git a/src/librustc_back/target/i686_pc_windows_msvc.rs b/src/librustc_back/target/i686_pc_windows_msvc.rs
index 96b2d37ab2088..196a2a88afc9b 100644
--- a/src/librustc_back/target/i686_pc_windows_msvc.rs
+++ b/src/librustc_back/target/i686_pc_windows_msvc.rs
@@ -12,7 +12,7 @@ use target::Target;
 
 pub fn target() -> Target {
     let mut base = super::windows_msvc_base::opts();
-    base.cpu = "pentium4".to_string();
+    base.cpu = "i686".to_string();
 
     Target {
         llvm_target: "i686-pc-windows-msvc".to_string(),
diff --git a/src/librustc_back/target/i686_unknown_dragonfly.rs b/src/librustc_back/target/i686_unknown_dragonfly.rs
index 32a15b9f2d4d1..fa7d299ce3861 100644
--- a/src/librustc_back/target/i686_unknown_dragonfly.rs
+++ b/src/librustc_back/target/i686_unknown_dragonfly.rs
@@ -12,7 +12,7 @@ use target::Target;
 
 pub fn target() -> Target {
     let mut base = super::dragonfly_base::opts();
-    base.cpu = "pentium4".to_string();
+    base.cpu = "i686".to_string();
     base.pre_link_args.push("-m32".to_string());
 
     Target {
diff --git a/src/librustc_back/target/i686_unknown_freebsd.rs b/src/librustc_back/target/i686_unknown_freebsd.rs
index 812ba11cd796b..630a7f2a8d193 100644
--- a/src/librustc_back/target/i686_unknown_freebsd.rs
+++ b/src/librustc_back/target/i686_unknown_freebsd.rs
@@ -12,7 +12,7 @@ use target::Target;
 
 pub fn target() -> Target {
     let mut base = super::freebsd_base::opts();
-    base.cpu = "pentium4".to_string();
+    base.cpu = "i686".to_string();
     base.pre_link_args.push("-m32".to_string());
 
     Target {
diff --git a/src/librustc_back/target/i686_unknown_linux_gnu.rs b/src/librustc_back/target/i686_unknown_linux_gnu.rs
index ac2af0c64fd6a..520cc281ecb02 100644
--- a/src/librustc_back/target/i686_unknown_linux_gnu.rs
+++ b/src/librustc_back/target/i686_unknown_linux_gnu.rs
@@ -12,7 +12,7 @@ use target::Target;
 
 pub fn target() -> Target {
     let mut base = super::linux_base::opts();
-    base.cpu = "pentium4".to_string();
+    base.cpu = "i686".to_string();
     base.pre_link_args.push("-m32".to_string());
 
     Target {