diff --git a/filter/source/config/cache/constant.hxx b/filter/source/config/cache/constant.hxx
index c1c37f6a17f4..7e8cc0218a9a 100644
--- a/filter/source/config/cache/constant.hxx
+++ b/filter/source/config/cache/constant.hxx
@@ -120,6 +120,7 @@
 #define  FLAGNAME_TEMPLATE          "TEMPLATE"
 #define  FLAGNAME_TEMPLATEPATH      "TEMPLATEPATH"
 #define  FLAGNAME_COMBINED          "COMBINED"
+#define FLAGNAME_SUPPORTSSIGNING "SUPPORTSSIGNING"
 
 /** @short  some uno service names.
  */
diff --git a/filter/source/config/cache/filtercache.cxx b/filter/source/config/cache/filtercache.cxx
index dacad0981133..68a26b6188df 100644
--- a/filter/source/config/cache/filtercache.cxx
+++ b/filter/source/config/cache/filtercache.cxx
@@ -1935,6 +1935,7 @@ css::uno::Sequence< OUString > FilterCache::impl_convertFlagField2FlagNames(SfxF
     if (nFlags & SfxFilterFlags::TEMPLATE         ) lFlagNames.push_back(FLAGNAME_TEMPLATE         );
     if (nFlags & SfxFilterFlags::TEMPLATEPATH     ) lFlagNames.push_back(FLAGNAME_TEMPLATEPATH     );
     if (nFlags & SfxFilterFlags::COMBINED         ) lFlagNames.push_back(FLAGNAME_COMBINED         );
+    if (nFlags & SfxFilterFlags::SUPPORTSSIGNING) lFlagNames.push_back(FLAGNAME_SUPPORTSSIGNING);
 
     return comphelper::containerToSequence(lFlagNames);
 }
@@ -2025,6 +2026,11 @@ SfxFilterFlags FilterCache::impl_convertFlagNames2FlagField(const css::uno::Sequ
             nField |= SfxFilterFlags::STARTPRESENTATION;
             continue;
         }
+        if (pNames[i] == FLAGNAME_SUPPORTSSIGNING)
+        {
+            nField |= SfxFilterFlags::SUPPORTSSIGNING;
+            continue;
+        }
         if (pNames[i] == FLAGNAME_READONLY)
         {
             nField |= SfxFilterFlags::OPENREADONLY;
diff --git a/filter/source/config/fragments/filters/MS_Word_2007_XML.xcu b/filter/source/config/fragments/filters/MS_Word_2007_XML.xcu
index a295ae3d8d25..30bd1bef7485 100644
--- a/filter/source/config/fragments/filters/MS_Word_2007_XML.xcu
+++ b/filter/source/config/fragments/filters/MS_Word_2007_XML.xcu
@@ -16,7 +16,7 @@
  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
 -->
     <node oor:name="MS Word 2007 XML" oor:op="replace">
-        <prop oor:name="Flags"><value>IMPORT EXPORT ALIEN 3RDPARTYFILTER ENCRYPTION PASSWORDTOMODIFY</value></prop>
+        <prop oor:name="Flags"><value>IMPORT EXPORT ALIEN 3RDPARTYFILTER ENCRYPTION PASSWORDTOMODIFY SUPPORTSSIGNING</value></prop>
         <prop oor:name="UIComponent"/>
         <prop oor:name="FilterService"><value>com.sun.star.comp.Writer.WriterFilter</value></prop>
         <prop oor:name="UserData"><value>OXML</value></prop>
diff --git a/include/comphelper/documentconstants.hxx b/include/comphelper/documentconstants.hxx
index 6e5fb1e26f84..75418535c80f 100644
--- a/include/comphelper/documentconstants.hxx
+++ b/include/comphelper/documentconstants.hxx
@@ -112,10 +112,11 @@ enum class SfxFilterFlags
     PASSWORDTOMODIFY  = 0x02000000L,
     PREFERED          = 0x10000000L,
     STARTPRESENTATION = 0x20000000L,
+    SUPPORTSSIGNING   = 0x40000000L,
 };
 namespace o3tl
 {
-    template<> struct typed_flags<SfxFilterFlags> : is_typed_flags<SfxFilterFlags, 0x339f157fL> {};
+    template<> struct typed_flags<SfxFilterFlags> : is_typed_flags<SfxFilterFlags, 0x739f157fL> {};
 }
 
 #define SFX_FILTER_NOTINSTALLED (SfxFilterFlags::MUSTINSTALL | SfxFilterFlags::CONSULTSERVICE)
diff --git a/include/sfx2/docfilt.hxx b/include/sfx2/docfilt.hxx
index 4a6babb6b7bd..6f45c9780b16 100644
--- a/include/sfx2/docfilt.hxx
+++ b/include/sfx2/docfilt.hxx
@@ -76,6 +76,8 @@ public:
 
     bool IsAllowedAsTemplate() const { return bool(nFormatType & SfxFilterFlags::TEMPLATE); }
     bool IsOwnFormat() const { return bool(nFormatType & SfxFilterFlags::OWN); }
+    /// If the filter supports digital signatures.
+    bool GetSupportsSigning() const { return bool(nFormatType & SfxFilterFlags::SUPPORTSSIGNING); }
     bool IsOwnTemplateFormat() const { return bool(nFormatType & SfxFilterFlags::TEMPLATEPATH); }
     bool IsAlienFormat() const { return bool(nFormatType & SfxFilterFlags::ALIEN); }
     bool CanImport() const { return bool(nFormatType & SfxFilterFlags::IMPORT); }
diff --git a/sfx2/source/doc/objserv.cxx b/sfx2/source/doc/objserv.cxx
index 4482ca88fbfb..86621d1ce656 100644
--- a/sfx2/source/doc/objserv.cxx
+++ b/sfx2/source/doc/objserv.cxx
@@ -1379,7 +1379,7 @@ void SfxObjectShell::ImplSign( bool bScriptingContent )
     if  (   GetMedium()
         &&  GetMedium()->GetFilter()
         &&  !GetMedium()->GetName().isEmpty()
-        &&  (   !GetMedium()->GetFilter()->IsOwnFormat()
+        &&  (   (!GetMedium()->GetFilter()->IsOwnFormat() && !GetMedium()->GetFilter()->GetSupportsSigning())
             ||  !GetMedium()->HasStorage_Impl()
             )
         )