diff --git a/src/libstd/path.rs b/src/libstd/path.rs
index 7ea642942dd..a09300ffe95 100644
--- a/src/libstd/path.rs
+++ b/src/libstd/path.rs
@@ -1475,6 +1475,7 @@ impl From<OsString> for PathBuf {
     /// Converts a `OsString` into a `PathBuf`
     ///
     /// This conversion does not allocate or copy memory.
+    #[inline]
     fn from(s: OsString) -> PathBuf {
         PathBuf { inner: s }
     }