diff --git a/src/blackmisc/dictionary.cpp b/src/blackmisc/dictionary.cpp
deleted file mode 100644
index 74b7a5e0b..000000000
--- a/src/blackmisc/dictionary.cpp
+++ /dev/null
@@ -1,46 +0,0 @@
-/* Copyright (C) 2016
- * swift project Community / Contributors
- *
- * This file is part of swift project. It is subject to the license terms in the LICENSE file found in the top-level
- * directory of this distribution. No part of swift project, including this file, may be copied, modified, propagated,
- * or distributed except according to the terms contained in the LICENSE file.
- */
-
-#include "blackmisc/dictionary.h"
-
-uint BlackMisc::calculateHash(const QList<uint> &values, const char *className)
-{
-    // http://stackoverflow.com/questions/113511/hash-code-implementation/113600#113600
-    if (values.isEmpty()) return 0;
-    uint hash = values.first();
-    for (int i = 1; i < values.size(); i++)
-    {
-        hash = 37 * hash + values.at(i);
-    }
-
-    // same values, but different class?
-    if (className)
-    {
-        hash = 37 * hash + qHash(QString(className));
-    }
-    return hash;
-}
-
-uint BlackMisc::calculateHash(const QList<int> &values, const char *className)
-{
-    QList<uint> list;
-    uint s = 0;
-    foreach(int i, values)
-    {
-        if (i >= 0)
-        {
-            list.append(static_cast<uint>(i));
-        }
-        else
-        {
-            list.append(static_cast<uint>(i));
-            list.append(s++);
-        }
-    }
-    return calculateHash(list, className);
-}
diff --git a/src/blackmisc/dictionary.h b/src/blackmisc/dictionary.h
index 99cfaaf64..9f787049f 100644
--- a/src/blackmisc/dictionary.h
+++ b/src/blackmisc/dictionary.h
@@ -537,17 +537,6 @@ namespace BlackMisc
         };
     }
 
-    /*!
-     * Calculate a single hash value based on a list of individual hash values.
-     * \param values
-     * \param className Will be hashed and used as an additional value in the list.
-     */
-    //! @{
-    BLACKMISC_EXPORT uint calculateHash(const QList<uint> &values, const char *className);
-
-    BLACKMISC_EXPORT uint calculateHash(const QList<int> &values, const char *className);
-    //! @}
-
 } // namespace BlackMisc
 
 #endif // BLACKMISC_DICTIONARY_H
diff --git a/src/blackmisc/pq/physicalquantity.cpp b/src/blackmisc/pq/physicalquantity.cpp
index 5e06dfef1..7e9f89d29 100644
--- a/src/blackmisc/pq/physicalquantity.cpp
+++ b/src/blackmisc/pq/physicalquantity.cpp
@@ -424,11 +424,9 @@ namespace BlackMisc
         template <class MU, class PQ>
         uint CPhysicalQuantity<MU, PQ>::getValueHash() const
         {
-            QList<uint> hashs;
             // there is no double qHash
             // also unit and rounding has to be considered
-            hashs << qHash(this->valueRoundedWithUnit(MU::defaultUnit()));
-            return calculateHash(hashs, "PQ");
+            return qHash(this->valueRoundedWithUnit(MU::defaultUnit()));
         }
 
         template <class MU, class PQ>
diff --git a/src/blackmisc/propertyindexvariantmap.cpp b/src/blackmisc/propertyindexvariantmap.cpp
index 13b854486..adfe54fa3 100644
--- a/src/blackmisc/propertyindexvariantmap.cpp
+++ b/src/blackmisc/propertyindexvariantmap.cpp
@@ -149,10 +149,7 @@ namespace BlackMisc
     uint CPropertyIndexVariantMap::getValueHash() const
     {
         // there is no hash for map, so I use this workaround here
-        const QString s = this->toQString(false);
-        QList<uint> h;
-        h << qHash(s);
-        return BlackMisc::calculateHash(h, "CPropertyIndexVariantMap");
+        return qHash(this->toQString(false));
     }
 } // namespace