diff --git a/src/windows/mod.rs b/src/windows/mod.rs
index 2770cf90ef5652972a02ebfa49c687be01631093..971cd11bca6b78971e4d09c47f056d9a3be6eb51 100644
--- a/src/windows/mod.rs
+++ b/src/windows/mod.rs
@@ -529,6 +529,8 @@ extern "C" {
         category: ::c_int,
         locale: *const wchar_t,
     ) -> *mut wchar_t;
+    #[link_name = "_aligned_malloc"]
+    pub fn aligned_malloc(size: size_t, alignment: size_t) -> *mut c_void;
 }
 
 extern "system" {