diff --git a/include/comphelper/stl_types.hxx b/include/comphelper/stl_types.hxx
index 251137b92485..f5c58fd15190 100644
--- a/include/comphelper/stl_types.hxx
+++ b/include/comphelper/stl_types.hxx
@@ -23,6 +23,7 @@
 
 #include <math.h>
 #include <functional>
+#include <memory>
 
 #include <rtl/ustring.hxx>
 #include <rtl/ustrbuf.hxx>
@@ -86,6 +87,19 @@ public:
     }
 };
 
+/// by-value less functor for std::set<std::unique_ptr<T>>
+template<class T> struct UniquePtrValueLess
+    : public ::std::binary_function<std::unique_ptr<T>, std::unique_ptr<T>, bool>
+{
+        bool operator()(std::unique_ptr<T> const& lhs,
+                        std::unique_ptr<T> const& rhs) const
+        {
+            assert(lhs.get());
+            assert(rhs.get());
+            return (*lhs) < (*rhs);
+        }
+};
+
 /** STL-compliant structure for comparing Reference&lt; &lt;iface&gt; &gt; instances
 */
 template < class IAFCE >
diff --git a/include/filter/msfilter/msdffimp.hxx b/include/filter/msfilter/msdffimp.hxx
index 5c256e8af544..42328e01127c 100644
--- a/include/filter/msfilter/msdffimp.hxx
+++ b/include/filter/msfilter/msdffimp.hxx
@@ -31,6 +31,8 @@
 #include <com/sun/star/embed/XEmbeddedObject.hpp>
 #include <com/sun/star/beans/XPropertySet.hpp>
 
+#include <comphelper/stl_types.hxx>
+
 #include <tools/solar.h>
 #include <tools/color.hxx>
 #include <tools/gen.hxx>
@@ -266,15 +268,9 @@ private:
     SvxMSDffImportRec &operator=(const SvxMSDffImportRec&) SAL_DELETED_FUNCTION;
 };
 
-struct MSDffImportRecords_Less
-{
-    bool operator()(std::unique_ptr<SvxMSDffImportRec> const& left,
-                    std::unique_ptr<SvxMSDffImportRec> const& right) const
-    { return (*left) < (*right); }
-};
 /** list of all SvxMSDffImportRec instances of/for a group */
-typedef std::set<std::unique_ptr<SvxMSDffImportRec>, MSDffImportRecords_Less>
-    MSDffImportRecords;
+typedef std::set<std::unique_ptr<SvxMSDffImportRec>,
+        comphelper::UniquePtrValueLess<SvxMSDffImportRec>> MSDffImportRecords;
 
 /** block of parameters for import/export for a single call of
     ImportObjAtCurrentStreamPos() */
diff --git a/sw/source/core/inc/blink.hxx b/sw/source/core/inc/blink.hxx
index 6c14225dadfa..8b9fc5d2d10a 100644
--- a/sw/source/core/inc/blink.hxx
+++ b/sw/source/core/inc/blink.hxx
@@ -26,6 +26,7 @@ class SwTextFrm;
 
 #include <vcl/timer.hxx>
 #include <tools/gen.hxx>
+#include <comphelper/stl_types.hxx>
 
 #include <set>
 #include <memory>
@@ -63,16 +64,8 @@ public:
     { return reinterpret_cast<sal_IntPtr>(pPor) == reinterpret_cast<sal_IntPtr>(rBlinkPortion.pPor); }
 };
 
-struct SwBlinkPortion_Less
-{
-    bool operator()(std::unique_ptr<SwBlinkPortion> const& lhs,
-                    std::unique_ptr<SwBlinkPortion> const& rhs)
-    {
-        return (*lhs) < (*rhs);
-    }
-};
-
-typedef std::set<std::unique_ptr<SwBlinkPortion>, SwBlinkPortion_Less> SwBlinkSet;
+typedef std::set<std::unique_ptr<SwBlinkPortion>,
+            comphelper::UniquePtrValueLess<SwBlinkPortion>> SwBlinkSet;
 
 class SwBlink
 {
diff --git a/sw/source/filter/html/wrthtml.hxx b/sw/source/filter/html/wrthtml.hxx
index df11e3eb00d1..f0323295351b 100644
--- a/sw/source/filter/html/wrthtml.hxx
+++ b/sw/source/filter/html/wrthtml.hxx
@@ -29,6 +29,7 @@
 #include <vcl/field.hxx>
 #include <i18nlangtag/lang.h>
 #include <tools/stream.hxx>
+#include <comphelper/stl_types.hxx>
 #include <o3tl/sorted_vector.hxx>
 
 #include "shellio.hxx"
@@ -262,16 +263,8 @@ struct SwHTMLFormatInfo
 
 };
 
-struct SwHTMLFormatInfo_Less
-{
-    bool operator()(std::unique_ptr<SwHTMLFormatInfo> const& lhs,
-                    std::unique_ptr<SwHTMLFormatInfo> const& rhs)
-    {
-        return (*lhs) < (*rhs);
-    }
-};
-
-typedef std::set<std::unique_ptr<SwHTMLFormatInfo>, SwHTMLFormatInfo_Less> SwHTMLFormatInfos;
+typedef std::set<std::unique_ptr<SwHTMLFormatInfo>,
+        comphelper::UniquePtrValueLess<SwHTMLFormatInfo>> SwHTMLFormatInfos;
 
 class IDocumentStylePoolAccess;
 
diff --git a/xmloff/source/style/impastpl.hxx b/xmloff/source/style/impastpl.hxx
index 4dbce494ac74..d7a8240e7c3b 100644
--- a/xmloff/source/style/impastpl.hxx
+++ b/xmloff/source/style/impastpl.hxx
@@ -28,6 +28,9 @@
 #include <com/sun/star/uno/Reference.h>
 #include <com/sun/star/xml/sax/XAttributeList.hpp>
 #include <com/sun/star/xml/sax/XDocumentHandler.hpp>
+
+#include <comphelper/stl_types.hxx>
+
 #include <xmloff/maptype.hxx>
 #include <xmloff/xmlexppr.hxx>
 
@@ -102,15 +105,8 @@ public:
 
 struct XMLAutoStyleFamily : boost::noncopyable
 {
-    struct XMLAutoStylePoolParent_Less
-    {
-        bool operator()(std::unique_ptr<XMLAutoStylePoolParent> const& lhs,
-                        std::unique_ptr<XMLAutoStylePoolParent> const& rhs) const
-        {
-            return (*lhs) < (*rhs);
-        }
-    };
-    typedef std::set<std::unique_ptr<XMLAutoStylePoolParent>, XMLAutoStylePoolParent_Less> ParentSetType;
+    typedef std::set<std::unique_ptr<XMLAutoStylePoolParent>,
+        comphelper::UniquePtrValueLess<XMLAutoStylePoolParent>> ParentSetType;
     typedef std::set<OUString> NameSetType;
 
     sal_uInt32 mnFamily;
@@ -140,16 +136,9 @@ struct XMLAutoStyleFamily : boost::noncopyable
 
 class SvXMLAutoStylePoolP_Impl
 {
-    struct XMLAutoStyleFamily_Less
-    {
-        bool operator()(std::unique_ptr<XMLAutoStyleFamily> const& lhs,
-                        std::unique_ptr<XMLAutoStyleFamily> const& rhs) const
-        {
-            return (*lhs) < (*rhs);
-        }
-    };
     // A set that finds and sorts based only on mnFamily
-    typedef std::set<std::unique_ptr<XMLAutoStyleFamily>, XMLAutoStyleFamily_Less> FamilySetType;
+    typedef std::set<std::unique_ptr<XMLAutoStyleFamily>,
+            comphelper::UniquePtrValueLess<XMLAutoStyleFamily>> FamilySetType;
 
     SvXMLExport& rExport;
     FamilySetType m_FamilySet;