diff --git a/build.rs b/build.rs
index 5d7969e1e..ef23bc841 100644
--- a/build.rs
+++ b/build.rs
@@ -229,9 +229,7 @@ fn can_compile<T: AsRef<str>>(test: T) -> bool {
     // Use `RUSTC_WRAPPER` if it's set, unless it's set to an empty string, as
     // documented [here].
     // [here]: https://doc.rust-lang.org/cargo/reference/environment-variables.html#environment-variables-cargo-reads
-    let wrapper = var("RUSTC_WRAPPER")
-        .ok()
-        .and_then(|w| if w.is_empty() { None } else { Some(w) });
+    let wrapper = var("RUSTC_WRAPPER").ok().filter(|w| !w.is_empty());
 
     let mut cmd = if let Some(wrapper) = wrapper {
         let mut cmd = std::process::Command::new(wrapper);