diff --git a/LibGit2Sharp/Core/Proxy.cs b/LibGit2Sharp/Core/Proxy.cs
index a9ab5e1d5..e60bcbb7e 100644
--- a/LibGit2Sharp/Core/Proxy.cs
+++ b/LibGit2Sharp/Core/Proxy.cs
@@ -1367,12 +1367,15 @@ public static IntPtr git_odb_backend_malloc(IntPtr backend, UIntPtr len)
 
         public static bool git_odb_exists(ObjectDatabaseSafeHandle odb, ObjectId id)
         {
-            GitOid oid = id.Oid;
+            using (ThreadAffinity())
+            {
+                GitOid oid = id.Oid;
 
-            int res = NativeMethods.git_odb_exists(odb, ref oid);
-            Ensure.BooleanResult(res);
+                int res = NativeMethods.git_odb_exists(odb, ref oid);
+                Ensure.BooleanResult(res);
 
-            return (res == 1);
+                return (res == 1);
+            }
         }
 
         public static ICollection<TResult> git_odb_foreach<TResult>(