diff --git a/build.rs b/build.rs
index bced1e0a..e48ef564 100644
--- a/build.rs
+++ b/build.rs
@@ -29,8 +29,7 @@ fn main() {
         println!("cargo:rustc-check-cfg=cfg(wrap_proc_macro)");
     }
 
-    let docs_rs = env::var_os("DOCS_RS").is_some();
-    let semver_exempt = cfg!(procmacro2_semver_exempt) || docs_rs;
+    let semver_exempt = cfg!(procmacro2_semver_exempt);
     if semver_exempt {
         // https://github.com/dtolnay/proc-macro2/issues/147
         println!("cargo:rustc-cfg=procmacro2_semver_exempt");