diff --git a/plugins/TagFix_MultipleTag2.py b/plugins/TagFix_MultipleTag2.py
index 2a9d25ce5..1dcc31459 100644
--- a/plugins/TagFix_MultipleTag2.py
+++ b/plugins/TagFix_MultipleTag2.py
@@ -26,6 +26,7 @@ def init(self, logger):
         self.errors[40201] = self.def_class(item = 4020, level = 1, tags = mapcss.list_('tag') + mapcss.list_('fix:chair', 'highway', 'roundabout'), title = mapcss.tr('Roundabout as area'))
         self.errors[40303] = self.def_class(item = 4030, level = 1, tags = mapcss.list_('tag') + mapcss.list_('fix:chair'), title = mapcss.tr('Tag conflict'), trap = mapcss.tr('Sometimes the object needs both tags.'), detail = mapcss.tr('The object contains two incompatible tags.'))
         self.errors[40401] = self.def_class(item = 4040, level = 2, tags = mapcss.list_('tag') + mapcss.list_('fix:chair', 'name', 'tourism'), title = mapcss.tr('{0} with {1}, likely this is a single pitch instead', mapcss._tag_uncapture(capture_tags, '{0.tag}'), mapcss._tag_uncapture(capture_tags, '{1.tag}')), detail = mapcss.tr('The camping site has a numeric name. Numeric identifiers are much more common for a single pitch (`tourism=camp_pitch`) within a camping site. Possibly the two were interchanged?'))
+        self.errors[50802] = self.def_class(item = 5080, level = 3, tags = mapcss.list_('tag') + mapcss.list_('name', 'fix:chair'), title = mapcss.tr('{0} contains the value of {1}', mapcss._tag_uncapture(capture_tags, '{0.key}'), mapcss._tag_uncapture(capture_tags, '{1.key}')))
         self.errors[71301] = self.def_class(item = 7130, level = 3, tags = mapcss.list_('tag') + mapcss.list_('highway', 'maxheight', 'fix:survey'), title = mapcss.tr('Missing maxheight tag'), detail = mapcss.tr('Missing `maxheight=*` or `maxheight:physical=*` for a tunnel or a way under a bridge.'))
         self.errors[303210] = self.def_class(item = 3032, level = 3, tags = mapcss.list_('tag'), title = mapcss.tr('Fence with {0} tag, also add {1}', mapcss._tag_uncapture(capture_tags, '{1.key}'), mapcss._tag_uncapture(capture_tags, '{2.key}')))
         self.errors[303211] = self.def_class(item = 3032, level = 3, tags = mapcss.list_('tag'), title = mapcss.tr('suspicious tag combination'))
@@ -215,6 +216,27 @@ def node(self, data, tags):
                     'name'])
                 }})
 
+        # *[alt_name][name][alt_name~=*name][alt_name!=*name]
+        if ('alt_name' in keys and 'name' in keys):
+            match = False
+            if not match:
+                capture_tags = {}
+                try: match = ((mapcss._tag_capture(capture_tags, 0, tags, 'alt_name')) and (mapcss._tag_capture(capture_tags, 1, tags, 'name')) and (mapcss.list_contains(mapcss._tag_capture(capture_tags, 2, tags, 'alt_name'), mapcss._value_capture(capture_tags, 2, mapcss.tag(tags, 'name')))) and (mapcss._tag_capture(capture_tags, 3, tags, 'alt_name') != mapcss._value_capture(capture_tags, 3, mapcss.tag(tags, 'name'))))
+                except mapcss.RuleAbort: pass
+            if match:
+                # -osmoseTags:list("name","fix:chair")
+                # -osmoseItemClassLevel:"5080/50802/3"
+                # throwWarning:tr("{0} contains the value of {1}","{0.key}","{1.key}")
+                # fixAdd:concat("{0.key}=",join_list(";",trim_list(split(";",replace(concat(";",join_list(";",trim_list(split(";",tag("alt_name")))),";"),concat(";",tag("name"),";"),";")))))
+                # assertMatch:"node name=y alt_name=\"x; y; z\""
+                # assertMatch:"node name=y alt_name=x;y;z"
+                # assertNoMatch:"node name=y alt_name=xyz"
+                # assertNoMatch:"node name=y alt_name=y"
+                err.append({'class': 50802, 'subclass': 0, 'text': mapcss.tr('{0} contains the value of {1}', mapcss._tag_uncapture(capture_tags, '{0.key}'), mapcss._tag_uncapture(capture_tags, '{1.key}')), 'allow_fix_override': True, 'fix': {
+                    '+': dict([
+                    (mapcss.concat(mapcss._tag_uncapture(capture_tags, '{0.key}='), mapcss.join_list(';', mapcss.trim_list(mapcss.split(';', mapcss.replace(mapcss.concat(';', mapcss.join_list(';', mapcss.trim_list(mapcss.split(';', mapcss.tag(tags, 'alt_name')))), ';'), mapcss.concat(';', mapcss.tag(tags, 'name'), ';'), ';')))))).split('=', 1)])
+                }})
+
         # node[tunnel][!highway][!area:highway][!railway][!waterway][!piste:type][type!=tunnel][public_transport!=platform][route!=ferry][man_made!=pipeline][man_made!=goods_conveyor][man_made!=wildlife_crossing][man_made!=tunnel][power!=cable]
         if ('tunnel' in keys):
             match = False
@@ -507,6 +529,23 @@ def way(self, data, tags, nds):
                     'name'])
                 }})
 
+        # *[alt_name][name][alt_name~=*name][alt_name!=*name]
+        if ('alt_name' in keys and 'name' in keys):
+            match = False
+            if not match:
+                capture_tags = {}
+                try: match = ((mapcss._tag_capture(capture_tags, 0, tags, 'alt_name')) and (mapcss._tag_capture(capture_tags, 1, tags, 'name')) and (mapcss.list_contains(mapcss._tag_capture(capture_tags, 2, tags, 'alt_name'), mapcss._value_capture(capture_tags, 2, mapcss.tag(tags, 'name')))) and (mapcss._tag_capture(capture_tags, 3, tags, 'alt_name') != mapcss._value_capture(capture_tags, 3, mapcss.tag(tags, 'name'))))
+                except mapcss.RuleAbort: pass
+            if match:
+                # -osmoseTags:list("name","fix:chair")
+                # -osmoseItemClassLevel:"5080/50802/3"
+                # throwWarning:tr("{0} contains the value of {1}","{0.key}","{1.key}")
+                # fixAdd:concat("{0.key}=",join_list(";",trim_list(split(";",replace(concat(";",join_list(";",trim_list(split(";",tag("alt_name")))),";"),concat(";",tag("name"),";"),";")))))
+                err.append({'class': 50802, 'subclass': 0, 'text': mapcss.tr('{0} contains the value of {1}', mapcss._tag_uncapture(capture_tags, '{0.key}'), mapcss._tag_uncapture(capture_tags, '{1.key}')), 'allow_fix_override': True, 'fix': {
+                    '+': dict([
+                    (mapcss.concat(mapcss._tag_uncapture(capture_tags, '{0.key}='), mapcss.join_list(';', mapcss.trim_list(mapcss.split(';', mapcss.replace(mapcss.concat(';', mapcss.join_list(';', mapcss.trim_list(mapcss.split(';', mapcss.tag(tags, 'alt_name')))), ';'), mapcss.concat(';', mapcss.tag(tags, 'name'), ';'), ';')))))).split('=', 1)])
+                }})
+
         return err
 
     def relation(self, data, tags, members):
@@ -660,6 +699,23 @@ def relation(self, data, tags, members):
                     'name'])
                 }})
 
+        # *[alt_name][name][alt_name~=*name][alt_name!=*name]
+        if ('alt_name' in keys and 'name' in keys):
+            match = False
+            if not match:
+                capture_tags = {}
+                try: match = ((mapcss._tag_capture(capture_tags, 0, tags, 'alt_name')) and (mapcss._tag_capture(capture_tags, 1, tags, 'name')) and (mapcss.list_contains(mapcss._tag_capture(capture_tags, 2, tags, 'alt_name'), mapcss._value_capture(capture_tags, 2, mapcss.tag(tags, 'name')))) and (mapcss._tag_capture(capture_tags, 3, tags, 'alt_name') != mapcss._value_capture(capture_tags, 3, mapcss.tag(tags, 'name'))))
+                except mapcss.RuleAbort: pass
+            if match:
+                # -osmoseTags:list("name","fix:chair")
+                # -osmoseItemClassLevel:"5080/50802/3"
+                # throwWarning:tr("{0} contains the value of {1}","{0.key}","{1.key}")
+                # fixAdd:concat("{0.key}=",join_list(";",trim_list(split(";",replace(concat(";",join_list(";",trim_list(split(";",tag("alt_name")))),";"),concat(";",tag("name"),";"),";")))))
+                err.append({'class': 50802, 'subclass': 0, 'text': mapcss.tr('{0} contains the value of {1}', mapcss._tag_uncapture(capture_tags, '{0.key}'), mapcss._tag_uncapture(capture_tags, '{1.key}')), 'allow_fix_override': True, 'fix': {
+                    '+': dict([
+                    (mapcss.concat(mapcss._tag_uncapture(capture_tags, '{0.key}='), mapcss.join_list(';', mapcss.trim_list(mapcss.split(';', mapcss.replace(mapcss.concat(';', mapcss.join_list(';', mapcss.trim_list(mapcss.split(';', mapcss.tag(tags, 'alt_name')))), ';'), mapcss.concat(';', mapcss.tag(tags, 'name'), ';'), ';')))))).split('=', 1)])
+                }})
+
         return err
 
 
@@ -688,6 +744,10 @@ class father:
         self.check_err(n.node(data, {'barrier': 'fence', 'material': 'wood'}), expected={'class': 303210, 'subclass': 0})
         self.check_err(n.node(data, {'name': '24', 'tourism': 'camp_site'}), expected={'class': 40401, 'subclass': 0})
         self.check_not_err(n.node(data, {'name': '24tents', 'tourism': 'camp_site'}), expected={'class': 40401, 'subclass': 0})
+        self.check_err(n.node(data, {'alt_name': 'x; y; z', 'name': 'y'}), expected={'class': 50802, 'subclass': 0})
+        self.check_err(n.node(data, {'alt_name': 'x;y;z', 'name': 'y'}), expected={'class': 50802, 'subclass': 0})
+        self.check_not_err(n.node(data, {'alt_name': 'xyz', 'name': 'y'}), expected={'class': 50802, 'subclass': 0})
+        self.check_not_err(n.node(data, {'alt_name': 'y', 'name': 'y'}), expected={'class': 50802, 'subclass': 0})
         self.check_err(n.way(data, {'amenity': 'fuel', 'building': 'roof'}, [0]), expected={'class': 30322, 'subclass': 0})
         self.check_not_err(n.way(data, {'amenity': 'parking', 'building': 'roof', 'parking': 'rooftop'}, [0]), expected={'class': 30322, 'subclass': 0})
         self.check_err(n.way(data, {'fee': 'yes', 'highway': 'primary'}, [0]), expected={'class': 30320, 'subclass': 1000})
diff --git a/plugins/TagFix_MultipleTag2.validator.mapcss b/plugins/TagFix_MultipleTag2.validator.mapcss
index cbb9bb440..ad092f7e4 100644
--- a/plugins/TagFix_MultipleTag2.validator.mapcss
+++ b/plugins/TagFix_MultipleTag2.validator.mapcss
@@ -222,6 +222,18 @@ area[tourism=caravan_site][name][name=~/^[0-9]+$/][!ref][!building] {
 }
 
 
+*[alt_name][name][alt_name~=*name][alt_name!=*name] {
+  throwWarning: tr("{0} contains the value of {1}", "{0.key}", "{1.key}");
+  assertMatch: "node name=y alt_name=x;y;z";
+  assertMatch: "node name=y alt_name=\"x; y; z\"";
+  assertNoMatch: "node name=y alt_name=y"; /* already checked by mapcss validator rules of JOSM */
+  assertNoMatch: "node name=y alt_name=xyz";
+  fixAdd: concat("{0.key}=", join_list(";", trim_list(split(";", replace(concat(";", join_list(";", trim_list(split(";", tag("alt_name")))), ";"), concat(";", tag("name"), ";"), ";")))));
+  -osmoseItemClassLevel: "5080/50802/3";
+  -osmoseTags: list("name", "fix:chair");
+}
+
+
 /* Workaround for issue #1766 */
 node[tunnel][!highway][!area:highway][!railway][!waterway][!piste:type][type!=tunnel][public_transport!=platform][route!=ferry][man_made!=pipeline][man_made!=goods_conveyor][man_made!=wildlife_crossing][man_made!=tunnel][power!=cable] {
     throwWarning: tr("{0} on suspicious object", "{0.key}");