diff --git a/src/librustc_trans/allocator.rs b/src/librustc_trans/allocator.rs
index ffebb959ebfde..871fe98ec0187 100644
--- a/src/librustc_trans/allocator.rs
+++ b/src/librustc_trans/allocator.rs
@@ -11,6 +11,7 @@
 use std::ffi::CString;
 use std::ptr;
 
+use attributes;
 use libc::c_uint;
 use rustc::middle::allocator::AllocatorKind;
 use rustc::ty::TyCtxt;
@@ -67,6 +68,9 @@ pub(crate) unsafe fn trans(tcx: TyCtxt, mods: &ModuleLlvm, kind: AllocatorKind)
         if tcx.sess.target.target.options.default_hidden_visibility {
             llvm::LLVMRustSetVisibility(llfn, llvm::Visibility::Hidden);
         }
+       if tcx.sess.target.target.options.requires_uwtable {
+           attributes::emit_uwtable(llfn, true);
+       }
 
         let callee = CString::new(kind.fn_name(method.name)).unwrap();
         let callee = llvm::LLVMRustGetOrInsertFunction(llmod,