diff --git a/compiler/rustc_session/src/filesearch.rs b/compiler/rustc_session/src/filesearch.rs
index 0042fec3562bc859d93406ebd63dcbcb6e1ce99e..4c0e0c01e2a08922d8c6e20e13641bb5cb953a74 100644
--- a/compiler/rustc_session/src/filesearch.rs
+++ b/compiler/rustc_session/src/filesearch.rs
@@ -223,5 +223,5 @@ fn from_env_args_next() -> Option<PathBuf> {
         }
     }
 
-    Ok(from_env_args_next().unwrap_or(default_from_rustc_driver_dll().unwrap_or(PathBuf::from("/")))
+    Ok(from_env_args_next().unwrap_or(default_from_rustc_driver_dll().unwrap_or(PathBuf::from("/"))))
 }