diff --git a/test/test_fru-utils.cpp b/test/test_fru-utils.cpp
index 9470e4c..70330a7 100644
--- a/test/test_fru-utils.cpp
+++ b/test/test_fru-utils.cpp
@@ -168,6 +168,7 @@
 TEST(FRUReaderTest, ReadData)
 {
     std::vector<uint8_t> data = {};
+    data.reserve(blockSize * 2);
     for (size_t i = 0; i < blockSize * 2; i++)
     {
         data.push_back(i);