diff --git a/libgit2-rs-safe/src/git/mod.rs b/libgit2-rs-safe/src/git/mod.rs
index 3fd647b..8a657b6 100644
--- a/libgit2-rs-safe/src/git/mod.rs
+++ b/libgit2-rs-safe/src/git/mod.rs
@@ -75,7 +75,7 @@ use std;
 use libc;
 
 fn ensure_initialized() {
-    static ONCE: std::sync::Once = std::sync::ONCE_INIT;
+    static ONCE: std::sync::Once = std::sync::Once::new();
     ONCE.call_once(|| {
         unsafe {
             check(raw::git_libgit2_init())