diff --git a/tests/ui/check-cfg/well-known-values.stderr b/tests/ui/check-cfg/well-known-values.stderr
index 0c50ec1abba..95a92283db1 100644
--- a/tests/ui/check-cfg/well-known-values.stderr
+++ b/tests/ui/check-cfg/well-known-values.stderr
@@ -147,7 +147,7 @@ warning: unexpected `cfg` condition value: `_UNEXPECTED_VALUE`
 LL |     target_env = "_UNEXPECTED_VALUE",
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
-   = note: expected values for `target_env` are: ``, `gnu`, `msvc`, `musl`, `newlib`, `nto70`, `nto71`, `ohos`, `p2`, `psx`, `relibc`, `sgx`, and `uclibc`
+   = note: expected values for `target_env` are: ``, `gnu`, `msvc`, `musl`, `newlib`, `nto70`, `nto71`, `ohos`, `p1`, `p2`, `psx`, `relibc`, `sgx`, and `uclibc`
    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg.html> for more information about checking conditional configuration
 
 warning: unexpected `cfg` condition value: `_UNEXPECTED_VALUE`