diff --git a/python/plugins/processing/algs/qgis/FixedDistanceBuffer.py b/python/plugins/processing/algs/qgis/FixedDistanceBuffer.py
deleted file mode 100644
index 3cff99f5151..00000000000
--- a/python/plugins/processing/algs/qgis/FixedDistanceBuffer.py
+++ /dev/null
@@ -1,125 +0,0 @@
-# -*- coding: utf-8 -*-
-
-"""
-***************************************************************************
-    FixedDistanceBuffer.py
-    ---------------------
-    Date                 : August 2012
-    Copyright            : (C) 2012 by Victor Olaya
-    Email                : volayaf at gmail dot com
-***************************************************************************
-*                                                                         *
-*   This program is free software; you can redistribute it and/or modify  *
-*   it under the terms of the GNU General Public License as published by  *
-*   the Free Software Foundation; either version 2 of the License, or     *
-*   (at your option) any later version.                                   *
-*                                                                         *
-***************************************************************************
-"""
-
-__author__ = 'Victor Olaya'
-__date__ = 'August 2012'
-__copyright__ = '(C) 2012, Victor Olaya'
-
-# This will get replaced with a git SHA1 when you do a git archive
-
-__revision__ = '$Format:%H$'
-
-import os
-
-from qgis.PyQt.QtGui import QIcon
-
-from qgis.core import (QgsWkbTypes,
-                       QgsProcessing,
-                       QgsProcessingParameterFeatureSource,
-                       QgsProcessingParameterNumber,
-                       QgsProcessingParameterBoolean,
-                       QgsProcessingParameterEnum,
-                       QgsProcessingParameterFeatureSink)
-
-from processing.algs.qgis.QgisAlgorithm import QgisAlgorithm
-
-from . import Buffer as buff
-
-pluginPath = os.path.split(os.path.split(os.path.dirname(__file__))[0])[0]
-
-
-class FixedDistanceBuffer(QgisAlgorithm):
-
-    INPUT = 'INPUT'
-    OUTPUT = 'OUTPUT'
-    FIELD = 'FIELD'
-    DISTANCE = 'DISTANCE'
-    SEGMENTS = 'SEGMENTS'
-    DISSOLVE = 'DISSOLVE'
-    END_CAP_STYLE = 'END_CAP_STYLE'
-    JOIN_STYLE = 'JOIN_STYLE'
-    MITER_LIMIT = 'MITER_LIMIT'
-
-    def icon(self):
-        return QIcon(os.path.join(pluginPath, 'images', 'ftools', 'buffer.png'))
-
-    def group(self):
-        return self.tr('Vector geometry')
-
-    def groupId(self):
-        return 'vectorgeometry'
-
-    def __init__(self):
-        super().__init__()
-
-    def initAlgorithm(self, config=None):
-        self.addParameter(QgsProcessingParameterFeatureSource(self.INPUT,
-                                                              self.tr('Input layer')))
-
-        self.addParameter(QgsProcessingParameterNumber(self.DISTANCE,
-                                                       self.tr('Distance'), type=QgsProcessingParameterNumber.Double,
-                                                       defaultValue=10.0))
-        self.addParameter(QgsProcessingParameterNumber(self.SEGMENTS,
-                                                       self.tr('Segments'), type=QgsProcessingParameterNumber.Integer,
-                                                       minValue=1, defaultValue=5))
-        self.addParameter(QgsProcessingParameterBoolean(self.DISSOLVE,
-                                                        self.tr('Dissolve result'), defaultValue=False))
-        self.end_cap_styles = [self.tr('Round'),
-                               'Flat',
-                               'Square']
-        self.addParameter(QgsProcessingParameterEnum(
-            self.END_CAP_STYLE,
-            self.tr('End cap style'),
-            options=self.end_cap_styles, defaultValue=0))
-        self.join_styles = [self.tr('Round'),
-                            'Miter',
-                            'Bevel']
-        self.addParameter(QgsProcessingParameterEnum(
-            self.JOIN_STYLE,
-            self.tr('Join style'),
-            options=self.join_styles, defaultValue=0))
-        self.addParameter(QgsProcessingParameterNumber(self.MITER_LIMIT,
-                                                       self.tr('Miter limit'), type=QgsProcessingParameterNumber.Double,
-                                                       minValue=0, defaultValue=2))
-
-        self.addParameter(QgsProcessingParameterFeatureSink(self.OUTPUT, self.tr('Buffer'), QgsProcessing.TypeVectorPolygon))
-
-    def name(self):
-        return 'fixeddistancebuffer'
-
-    def displayName(self):
-        return self.tr('Fixed distance buffer')
-
-    def processAlgorithm(self, parameters, context, feedback):
-        source = self.parameterAsSource(parameters, self.INPUT, context)
-
-        distance = self.parameterAsDouble(parameters, self.DISTANCE, context)
-        dissolve = self.parameterAsBool(parameters, self.DISSOLVE, context)
-        segments = self.parameterAsInt(parameters, self.SEGMENTS, context)
-        end_cap_style = self.parameterAsEnum(parameters, self.END_CAP_STYLE, context) + 1
-        join_style = self.parameterAsEnum(parameters, self.JOIN_STYLE, context) + 1
-        miter_limit = self.parameterAsDouble(parameters, self.MITER_LIMIT, context)
-
-        (sink, dest_id) = self.parameterAsSink(parameters, self.OUTPUT, context,
-                                               source.fields(), QgsWkbTypes.Polygon, source.sourceCrs())
-
-        buff.buffering(feedback, context, sink, distance, None, False, source, dissolve, segments, end_cap_style,
-                       join_style, miter_limit)
-
-        return {self.OUTPUT: dest_id}
diff --git a/python/plugins/processing/algs/qgis/QgisAlgorithmProvider.py b/python/plugins/processing/algs/qgis/QgisAlgorithmProvider.py
index 7c09e49c7b9..c461fc249e8 100644
--- a/python/plugins/processing/algs/qgis/QgisAlgorithmProvider.py
+++ b/python/plugins/processing/algs/qgis/QgisAlgorithmProvider.py
@@ -69,7 +69,6 @@ from .FieldPyculator import FieldsPyculator
 from .FieldsCalculator import FieldsCalculator
 from .FieldsMapper import FieldsMapper
 from .FindProjection import FindProjection
-from .FixedDistanceBuffer import FixedDistanceBuffer
 from .GeometryConvert import GeometryConvert
 from .GeometryByExpression import GeometryByExpression
 from .GridLine import GridLine
@@ -192,7 +191,6 @@ class QgisAlgorithmProvider(QgsProcessingProvider):
                 FieldsMapper(),
                 FieldsPyculator(),
                 FindProjection(),
-                FixedDistanceBuffer(),
                 GeometryByExpression(),
                 GeometryConvert(),
                 GridLine(),
diff --git a/python/plugins/processing/tests/testdata/qgis_algorithm_tests.yaml b/python/plugins/processing/tests/testdata/qgis_algorithm_tests.yaml
index 731af2796da..9196e78b115 100755
--- a/python/plugins/processing/tests/testdata/qgis_algorithm_tests.yaml
+++ b/python/plugins/processing/tests/testdata/qgis_algorithm_tests.yaml
@@ -556,7 +556,7 @@ tests:
           geometry:
             precision: 7
 
-  - algorithm: qgis:fixeddistancebuffer
+  - algorithm: native:buffer
     name: Basic polygon buffer
     params:
       DISSOLVE: 'False'
@@ -573,7 +573,7 @@ tests:
           geometry:
             precision: 7
 
-  - algorithm: qgis:fixeddistancebuffer
+  - algorithm: native:buffer
     name: Polygon buffer with dissolve
     params:
       DISSOLVE: 'True'
@@ -1007,7 +1007,7 @@ tests:
           geometry:
             precision: 7
 
-  - algorithm: qgis:fixeddistancebuffer
+  - algorithm: native:buffer
     name: Buffer polygons using bevel
     params:
       DISSOLVE: false
@@ -1024,7 +1024,7 @@ tests:
         name: expected/buffer_polys_bevel.gml
         type: vector
 
-  - algorithm: qgis:fixeddistancebuffer
+  - algorithm: native:buffer
     name: Buffer polygons using miter
     params:
       DISSOLVE: false
@@ -1041,7 +1041,7 @@ tests:
         name: expected/buffer_polys_miter.gml
         type: vector
 
-  - algorithm: qgis:fixeddistancebuffer
+  - algorithm: native:buffer
     name: Buffer lines
     params:
       DISSOLVE: false
@@ -1061,7 +1061,7 @@ tests:
           geometry:
             precision: 7
 
-  - algorithm: qgis:fixeddistancebuffer
+  - algorithm: native:buffer
     name: Buffer lines (flat)
     params:
       DISSOLVE: false
@@ -1081,7 +1081,7 @@ tests:
           geometry:
             precision: 7
 
-  - algorithm: qgis:fixeddistancebuffer
+  - algorithm: native:buffer
     name: Buffer lines (square)
     params:
       DISSOLVE: false