diff --git a/cmd/juju/model/mocks/showcommit_mock.go b/cmd/juju/model/mocks/showcommit_mock.go
index 063dce67828..293b5b31666 100644
--- a/cmd/juju/model/mocks/showcommit_mock.go
+++ b/cmd/juju/model/mocks/showcommit_mock.go
@@ -49,16 +49,16 @@ func (mr *MockShowCommitCommandAPIMockRecorder) Close() *gomock.Call {
 }
 
 // ShowCommit mocks base method
-func (m *MockShowCommitCommandAPI) ShowCommit(arg0 func(time.Time) string) (model.GenerationCommit, error) {
+func (m *MockShowCommitCommandAPI) ShowCommit(arg0 func(time.Time) string, arg1 int) (model.GenerationCommit, error) {
 	m.ctrl.T.Helper()
-	ret := m.ctrl.Call(m, "ShowCommit", arg0)
+	ret := m.ctrl.Call(m, "ShowCommit", arg0, arg1)
 	ret0, _ := ret[0].(model.GenerationCommit)
 	ret1, _ := ret[1].(error)
 	return ret0, ret1
 }
 
 // ShowCommit indicates an expected call of ShowCommit
-func (mr *MockShowCommitCommandAPIMockRecorder) ShowCommit(arg0 interface{}) *gomock.Call {
+func (mr *MockShowCommitCommandAPIMockRecorder) ShowCommit(arg0, arg1 interface{}) *gomock.Call {
 	mr.mock.ctrl.T.Helper()
-	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "ShowCommit", reflect.TypeOf((*MockShowCommitCommandAPI)(nil).ShowCommit), arg0)
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "ShowCommit", reflect.TypeOf((*MockShowCommitCommandAPI)(nil).ShowCommit), arg0, arg1)
 }
diff --git a/cmd/juju/model/showcommit_test.go b/cmd/juju/model/showcommit_test.go
index c9fdc66fc14..431d8c52add 100644
--- a/cmd/juju/model/showcommit_test.go
+++ b/cmd/juju/model/showcommit_test.go
@@ -4,7 +4,6 @@
 package model_test
 
 import (
-	"fmt"
 	"github.com/golang/mock/gomock"
 	"github.com/juju/cmd"
 	"github.com/juju/cmd/cmdtesting"
@@ -101,11 +100,10 @@ func (s *showCommitsSuite) TestRunCommandJsonOutput(c *gc.C) {
 }
 `, "")
 	expected = expected + "\n"
-	s.api.EXPECT().ShowCommit(gomock.Any()).Return(result, nil)
+	s.api.EXPECT().ShowCommit(gomock.Any(), 1).Return(result, nil)
 	ctx, err := s.runCommand(c, "1", "--format=json")
 	c.Assert(err, jc.ErrorIsNil)
 	output := cmdtesting.Stdout(ctx)
-	fmt.Println(output)
 	c.Assert(output, gc.Equals, expected)
 }
 
@@ -130,8 +128,7 @@ committed-by: test-user
 created: 0001-01-00
 created-by: test-user
 `[1:]
-	s.api.EXPECT().ShowCommit(gomock.Any()).Return(result, nil)
-
+	s.api.EXPECT().ShowCommit(gomock.Any(), 1).Return(result, nil)
 	ctx, err := s.runCommand(c, "1", "--format=yaml")
 	c.Assert(err, jc.ErrorIsNil)
 	c.Assert(cmdtesting.Stdout(ctx), gc.Matches, expected)
@@ -140,7 +137,7 @@ created-by: test-user
 func (s *showCommitsSuite) TestRunCommandAPIError(c *gc.C) {
 	defer s.setup(c).Finish()
 
-	s.api.EXPECT().ShowCommit(gomock.Any()).Return(nil, errors.New("boom"))
+	s.api.EXPECT().ShowCommit(gomock.Any(), gomock.Any()).Return(nil, errors.New("boom"))
 
 	_, err := s.runCommand(c)
 	c.Assert(err, gc.ErrorMatches, "boom")