diff --git a/repertory/repertory_test/src/winfsp_drive_volume_test.cpp b/repertory/repertory_test/src/winfsp_drive_volume_test.cpp
index 9de7968b..e7c4c997 100644
--- a/repertory/repertory_test/src/winfsp_drive_volume_test.cpp
+++ b/repertory/repertory_test/src/winfsp_drive_volume_test.cpp
@@ -66,7 +66,7 @@ TYPED_TEST(winfsp_test, volume_can_get_size_info) {
     EXPECT_TRUE(::GetDiskFreeSpaceA(this->mount_location.c_str(),
                                     &sectors_per_cluster, &bytes_per_sector,
                                     &free_clusters, &total_clusters));
-    EXPECT_NE(0U, bytes_per_cluster);
+    EXPECT_NE(0U, bytes_per_sector);
     EXPECT_NE(0U, free_clusters);
     EXPECT_NE(0U, sectors_per_cluster);
     EXPECT_EQ(0U, total_clusters);