diff --git a/src/borg/testsuite/archiver.py b/src/borg/testsuite/archiver.py
index 339b6917b..4b41ec042 100644
--- a/src/borg/testsuite/archiver.py
+++ b/src/borg/testsuite/archiver.py
@@ -2029,7 +2029,7 @@ class ArchiverTestCase(ArchiverTestCaseBase):
         self.cmd('create', self.repository_location + '::test3.checkpoint', src_dir)
         self.cmd('create', self.repository_location + '::test3.checkpoint.1', src_dir)
         self.cmd('create', self.repository_location + '::test4.checkpoint', src_dir)
-        output = self.cmd('prune', '--list', '--dry-run', self.repository_location, '--keep-daily=2')
+        output = self.cmd('prune', '--list', '--dry-run', self.repository_location, '--keep-daily=1')
         assert re.search(r'Would prune:\s+test1', output)
         # must keep the latest non-checkpoint archive:
         assert re.search(r'Keeping archive \(rule: daily #1\):\s+test2', output)
@@ -2041,7 +2041,7 @@ class ArchiverTestCase(ArchiverTestCaseBase):
         self.assert_in('test3.checkpoint', output)
         self.assert_in('test3.checkpoint.1', output)
         self.assert_in('test4.checkpoint', output)
-        self.cmd('prune', self.repository_location, '--keep-daily=2')
+        self.cmd('prune', self.repository_location, '--keep-daily=1')
         output = self.cmd('list', '--consider-checkpoints', self.repository_location)
         self.assert_not_in('test1', output)
         # the latest non-checkpoint archive must be still there:
@@ -2063,13 +2063,13 @@ class ArchiverTestCase(ArchiverTestCaseBase):
         self.cmd('init', '--encryption=repokey', self.repository_location)
         self.cmd('create', self.repository_location + '::test1', src_dir)
         self.cmd('create', self.repository_location + '::test2', src_dir)
-        output = self.cmd('prune', '--list', '--dry-run', self.repository_location, '--keep-daily=2')
+        output = self.cmd('prune', '--list', '--dry-run', self.repository_location, '--keep-daily=1')
         assert re.search(r'Keeping archive \(rule: daily #1\):\s+test2', output)
         assert re.search(r'Would prune:\s+test1', output)
         output = self.cmd('list', self.repository_location)
         self.assert_in('test1', output)
         self.assert_in('test2', output)
-        self.cmd('prune', '--save-space', self.repository_location, '--keep-daily=2')
+        self.cmd('prune', '--save-space', self.repository_location, '--keep-daily=1')
         output = self.cmd('list', self.repository_location)
         self.assert_not_in('test1', output)
         self.assert_in('test2', output)
@@ -2080,7 +2080,7 @@ class ArchiverTestCase(ArchiverTestCaseBase):
         self.cmd('create', self.repository_location + '::foo-2015-08-12-20:00', src_dir)
         self.cmd('create', self.repository_location + '::bar-2015-08-12-10:00', src_dir)
         self.cmd('create', self.repository_location + '::bar-2015-08-12-20:00', src_dir)
-        output = self.cmd('prune', '--list', '--dry-run', self.repository_location, '--keep-daily=2', '--prefix=foo-')
+        output = self.cmd('prune', '--list', '--dry-run', self.repository_location, '--keep-daily=1', '--prefix=foo-')
         assert re.search(r'Keeping archive \(rule: daily #1\):\s+foo-2015-08-12-20:00', output)
         assert re.search(r'Would prune:\s+foo-2015-08-12-10:00', output)
         output = self.cmd('list', self.repository_location)
@@ -2088,7 +2088,7 @@ class ArchiverTestCase(ArchiverTestCaseBase):
         self.assert_in('foo-2015-08-12-20:00', output)
         self.assert_in('bar-2015-08-12-10:00', output)
         self.assert_in('bar-2015-08-12-20:00', output)
-        self.cmd('prune', self.repository_location, '--keep-daily=2', '--prefix=foo-')
+        self.cmd('prune', self.repository_location, '--keep-daily=1', '--prefix=foo-')
         output = self.cmd('list', self.repository_location)
         self.assert_not_in('foo-2015-08-12-10:00', output)
         self.assert_in('foo-2015-08-12-20:00', output)
@@ -2101,7 +2101,7 @@ class ArchiverTestCase(ArchiverTestCaseBase):
         self.cmd('create', self.repository_location + '::2015-08-12-20:00-foo', src_dir)
         self.cmd('create', self.repository_location + '::2015-08-12-10:00-bar', src_dir)
         self.cmd('create', self.repository_location + '::2015-08-12-20:00-bar', src_dir)
-        output = self.cmd('prune', '--list', '--dry-run', self.repository_location, '--keep-daily=2', '--glob-archives=2015-*-foo')
+        output = self.cmd('prune', '--list', '--dry-run', self.repository_location, '--keep-daily=1', '--glob-archives=2015-*-foo')
         assert re.search(r'Keeping archive \(rule: daily #1\):\s+2015-08-12-20:00-foo', output)
         assert re.search(r'Would prune:\s+2015-08-12-10:00-foo', output)
         output = self.cmd('list', self.repository_location)
@@ -2109,7 +2109,7 @@ class ArchiverTestCase(ArchiverTestCaseBase):
         self.assert_in('2015-08-12-20:00-foo', output)
         self.assert_in('2015-08-12-10:00-bar', output)
         self.assert_in('2015-08-12-20:00-bar', output)
-        self.cmd('prune', self.repository_location, '--keep-daily=2', '--glob-archives=2015-*-foo')
+        self.cmd('prune', self.repository_location, '--keep-daily=1', '--glob-archives=2015-*-foo')
         output = self.cmd('list', self.repository_location)
         self.assert_not_in('2015-08-12-10:00-foo', output)
         self.assert_in('2015-08-12-20:00-foo', output)