1 files changed, 2 insertions, 2 deletions
diff --git a/csharp/src/Google.Protobuf/WellKnownTypes/Any.cs b/csharp/src/Google.Protobuf/WellKnownTypes/Any.cs
index d04fd970..48cd99a1 100644
--- a/csharp/src/Google.Protobuf/WellKnownTypes/Any.cs
+++ b/csharp/src/Google.Protobuf/WellKnownTypes/Any.cs
@@ -124,7 +124,7 @@ namespace Google.Protobuf.WellKnownTypes {
     public string TypeUrl {
       get { return typeUrl_; }
       set {
-        typeUrl_ = pb::Preconditions.CheckNotNull(value, "value");
+        typeUrl_ = pb::ProtoPreconditions.CheckNotNull(value, "value");
       }
     }
 
@@ -137,7 +137,7 @@ namespace Google.Protobuf.WellKnownTypes {
     public pb::ByteString Value {
       get { return value_; }
       set {
-        value_ = pb::Preconditions.CheckNotNull(value, "value");
+        value_ = pb::ProtoPreconditions.CheckNotNull(value, "value");
       }
     }