diff --git a/test/openpower-pels/pel_test.cpp b/test/openpower-pels/pel_test.cpp
index 9976c5c..afab5ca 100644
--- a/test/openpower-pels/pel_test.cpp
+++ b/test/openpower-pels/pel_test.cpp
@@ -265,9 +265,16 @@
     const auto& d = ud->data();
 
     std::string jsonString{d.begin(), d.end()};
-    std::string expected =
+
+    std::string expectedJSON =
         R"({"KEY1":"VALUE1","KEY2":"VALUE2","KEY3":"VALUE3"})";
-    EXPECT_EQ(jsonString, expected);
+
+    // The actual data is null padded to a 4B boundary.
+    std::vector<uint8_t> expectedData;
+    expectedData.resize(52, '\0');
+    memcpy(expectedData.data(), expectedJSON.data(), expectedJSON.size());
+
+    EXPECT_EQ(d, expectedData);
 
     // Ensure we can read this as JSON
     auto newJSON = nlohmann::json::parse(jsonString);
diff --git a/test/openpower-pels/user_data_test.cpp b/test/openpower-pels/user_data_test.cpp
index a350de9..a957a4d 100644
--- a/test/openpower-pels/user_data_test.cpp
+++ b/test/openpower-pels/user_data_test.cpp
@@ -89,13 +89,13 @@
 
 TEST(UserDataTest, ConstructorTest)
 {
-    std::vector<uint8_t> data{0x11, 0x22, 0x33, 0x44, 0x55, 0x66};
+    std::vector<uint8_t> data{0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88};
 
     UserData ud(0x1112, 0x42, 0x01, data);
     EXPECT_TRUE(ud.valid());
 
     EXPECT_EQ(ud.header().id, 0x5544);
-    EXPECT_EQ(ud.header().size, 14);
+    EXPECT_EQ(ud.header().size, 16);
     EXPECT_EQ(ud.header().version, 0x01);
     EXPECT_EQ(ud.header().subType, 0x42);
     EXPECT_EQ(ud.header().componentID, 0x1112);