diff --git a/ndn-cpp/c/encoding/binary-xml-data.c b/ndn-cpp/c/encoding/binary-xml-data.c
index 564e6f4..37513f9 100644
--- a/ndn-cpp/c/encoding/binary-xml-data.c
+++ b/ndn-cpp/c/encoding/binary-xml-data.c
@@ -188,7 +188,7 @@
       return error;
   }
   else
-    ndn_SignedInfo_init(&data->signedInfo);
+    ndn_SignedInfo_init(&data->signedInfo, data->signedInfo.keyLocator.keyName.components, data->signedInfo.keyLocator.keyName.maxComponents);
 
   // Require a Content element, but set allowNull to allow a missing BLOB.
   if ((error = ndn_BinaryXmlDecoder_readBinaryDTagElement