diff --git a/test/ipmi_open_unittest.cpp b/test/ipmi_open_unittest.cpp
index 8232340..5b18631 100644
--- a/test/ipmi_open_unittest.cpp
+++ b/test/ipmi_open_unittest.cpp
@@ -35,7 +35,7 @@
     req->crc = 0;
     req->flags = 0;
     // length() doesn't include the nul-terminator.
-    std::memcpy(req->blobId, blobId.c_str(), blobId.length());
+    std::memcpy(req + 1, blobId.c_str(), blobId.length());
 
     dataLen = sizeof(struct BmcBlobOpenTx) + blobId.length();
 
@@ -59,7 +59,7 @@
     req->flags = 0;
     // length() doesn't include the nul-terminator, request buff is initialized
     // to 0s
-    std::memcpy(req->blobId, blobId.c_str(), blobId.length());
+    std::memcpy(req + 1, blobId.c_str(), blobId.length());
 
     dataLen = sizeof(struct BmcBlobOpenTx) + blobId.length() + 1;
 
@@ -87,7 +87,7 @@
     req->flags = 0;
     // length() doesn't include the nul-terminator, request buff is initialized
     // to 0s
-    std::memcpy(req->blobId, blobId.c_str(), blobId.length());
+    std::memcpy(req + 1, blobId.c_str(), blobId.length());
 
     dataLen = sizeof(struct BmcBlobOpenTx) + blobId.length() + 1;
     uint16_t returnedSession = 0x54;