diff --git a/common/dataStructures/StorageClass.cpp b/common/dataStructures/StorageClass.cpp
index ba62a00b4a975d0f4589c30e2365d1b72a0a4898..8f3f0d76d157fee71c468120e9313bc7cf0848e4 100644
--- a/common/dataStructures/StorageClass.cpp
+++ b/common/dataStructures/StorageClass.cpp
@@ -34,7 +34,7 @@ StorageClass::StorageClass():
 // operator==
 //------------------------------------------------------------------------------
 bool StorageClass::operator==(const StorageClass &rhs) const {
-  return diskInstance==rhs.diskInstance && name==rhs.name;
+  return name==rhs.name;
 }
 
 //------------------------------------------------------------------------------
diff --git a/common/dataStructures/StorageClass.hpp b/common/dataStructures/StorageClass.hpp
index bc00a5726091bed02b8d9460419cc236a5493425..4e4f9e4f33a0f207f7aee19b1c863429421ab8ab 100644
--- a/common/dataStructures/StorageClass.hpp
+++ b/common/dataStructures/StorageClass.hpp
@@ -47,9 +47,9 @@ struct StorageClass {
    * this one.
    *
    * Please note that two StorageClass objects are considered equal if and only
-   * if both their diskInstance and name member-variables match, i.e.
+   * if their name member-variables match, i.e.
    *
-   *    diskInstance==rhs.diskInstance && name==rhs.name;
+   *    name==rhs.name;
    *
    * All other member-variables are intentionally ignored by this equality
    * operator.
diff --git a/common/dataStructures/StorageClassTest.cpp b/common/dataStructures/StorageClassTest.cpp
index ef869cc66f4992a0b8540f29ac5fb40b51a4d540..e4a4414fe944b2332c36a035d125b3147e860e02 100644
--- a/common/dataStructures/StorageClassTest.cpp
+++ b/common/dataStructures/StorageClassTest.cpp
@@ -100,12 +100,6 @@ TEST_F(cta_common_dataStructures_StorageClassTest, equality_different_objects_di
   ASSERT_EQ(m_storageClass1DiskInstance1, m_storageClass1DiskInstance1EffectiveCopy);
 }
 
-TEST_F(cta_common_dataStructures_StorageClassTest, inequality_different_disk_instance) {
-  using namespace cta::common::dataStructures;
-
-  ASSERT_NE(m_storageClass1DiskInstance1, m_storageClass1DiskInstance2);
-}
-
 TEST_F(cta_common_dataStructures_StorageClassTest, inequality_different_name) {
   using namespace cta::common::dataStructures;