diff --git a/python/distro_info.py b/python/distro_info.py
index c87fbff6..0a624745 100644
--- a/python/distro_info.py
+++ b/python/distro_info.py
@@ -1,3 +1,4 @@
+# Copyright (C) 2021, Trisquel GNU/Linux developers <trisquel-devel@listas.trisquel.info>
 # Copyright (C) 2009-2012, Benjamin Drung <bdrung@debian.org>
 #
 # Permission to use, copy, modify, and/or distribute this software for any
@@ -12,7 +13,7 @@
 # ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 # OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
-"""provides information about Ubuntu's and Debian's distributions"""
+"""provides information about Trisquel's and Debian's distributions"""
 
 import csv
 import datetime
@@ -100,7 +101,7 @@
 
 class DistroInfo:
     """Base class for distribution information.
-    Use DebianDistroInfo or UbuntuDistroInfo instead of using this directly.
+    Use DebianDistroInfo or TrisquelDistroInfo instead of using this directly.
     """
 
     def __init__(self, distro):
@@ -340,16 +340,16 @@ class DebianDistroInfo(DistroInfo):
         ]
 
 
-class UbuntuDistroInfo(DistroInfo):
-    """provides information about Ubuntu's distributions"""
+class TrisquelDistroInfo(DistroInfo):
+    """provides information about Trisquel's distributions"""
 
     def __init__(self) -> None:
-        super().__init__("Ubuntu")
+        super().__init__("Trisquel")
 
     def lts(
         self, date: typing.Optional[datetime.date] = None, result: str = "codename"
     ) -> typing.Union[DistroRelease, str]:
-        """Get latest long term support (LTS) Ubuntu distribution based on the
+        """Get latest long term support (LTS) Trisquel distribution based on the
         given date."""
         if date is None:
             date = self._date
@@ -372,7 +372,7 @@ class UbuntuDistroInfo(DistroInfo):
     def supported(
         self, date: typing.Optional[datetime.date] = None, result: str = "codename"
     ) -> list[typing.Union[DistroRelease, str]]:
-        """Get list of all supported Ubuntu distributions based on the given
+        """Get list of all supported Trisquel distributions based on the given
         date."""
         if date is None:
             date = self._date
@@ -382,17 +382,3 @@ class UbuntuDistroInfo(DistroInfo):
             if (x.eol and date <= x.eol) or (x.eol_server is not None and date <= x.eol_server)
         ]
         return distros
-
-    def supported_esm(
-        self, date: typing.Optional[datetime.date] = None, result: str = "codename"
-    ) -> list[typing.Union[DistroRelease, str]]:
-        """Get list of all ESM supported Ubuntu distributions based on the
-        given date."""
-        if date is None:
-            date = self._date
-        distros = [
-            self._format(result, x)
-            for x in self._avail(date)
-            if x.eol_esm is not None and date <= x.eol_esm
-        ]
-        return distros