diff --git a/libwvdrmengine/oemcrypto/test/oemcrypto_test.cpp b/libwvdrmengine/oemcrypto/test/oemcrypto_test.cpp
index 495b1d85..4bb6969f 100644
--- a/libwvdrmengine/oemcrypto/test/oemcrypto_test.cpp
+++ b/libwvdrmengine/oemcrypto/test/oemcrypto_test.cpp
@@ -4700,7 +4700,8 @@ TEST_F(UsageTableTest, TwoHundredEntries) {
   ASSERT_NO_FATAL_FAILURE(s1.UpdateUsageEntry(&encrypted_usage_header_));
   ASSERT_NO_FATAL_FAILURE(s1.close());
 
-  const size_t ENTRY_COUNT = 200;  // API says should hold at least 200 entries.
+  // API says should hold at least 200 entries. Subtract one for s1's entry.
+  const size_t ENTRY_COUNT = 200 - 1;
   vector<Session> sessions(ENTRY_COUNT);
   for (size_t i = 0; i < ENTRY_COUNT; i++) {
     ASSERT_NO_FATAL_FAILURE(sessions[i].open());