diff --git a/pkg/pod/pod.go b/pkg/pod/pod.go
index 6d016d1e..0971b270 100644
--- a/pkg/pod/pod.go
+++ b/pkg/pod/pod.go
@@ -136,13 +136,26 @@ func (s *Service) ModifyPodResource(pod *v1.Pod, t *v1beta3.Tortoise) {
 				if !ok {
 					continue
 				}
-				oldNum, err := resource.ParseQuantity(env.Value)
+				val := env.Value
+				last := val[len(val)-1]
+				if last >= '0' && last <= '9' {
+					// OK
+				} else if last == 'B' {
+					// It should end with B.
+					val = val[:len(val)-1]
+				} else {
+					// invalid GOMEMLIMIT, skip
+					continue
+				}
+
+				oldNum, err := resource.ParseQuantity(val)
 				if err != nil {
 					// invalid GOMEMLIMIT, skip
 					continue
 				}
-				newNum := int64(float64(oldNum.MilliValue()) * changeRatio)
-				pod.Spec.Containers[i].Env[j].Value = resource.NewMilliQuantity(newNum, oldNum.Format).String()
+				// See GOMEMLIMIT's format: https://pkg.go.dev/runtime#hdr-Environment_Variables
+				newNum := int(float64(oldNum.Value()) * changeRatio)
+				pod.Spec.Containers[i].Env[j].Value = strconv.Itoa(newNum)
 			}
 		}
 	}
diff --git a/pkg/pod/pod_test.go b/pkg/pod/pod_test.go
index 4d401cc6..ee09d0dc 100644
--- a/pkg/pod/pod_test.go
+++ b/pkg/pod/pod_test.go
@@ -1,11 +1,13 @@
 package pod
 
 import (
+	"strconv"
 	"testing"
 
 	"github.com/google/go-cmp/cmp"
 	v1 "k8s.io/api/core/v1"
 	"k8s.io/apimachinery/pkg/api/resource"
+	"k8s.io/utils/ptr"
 
 	"github.com/mercari/tortoise/api/v1beta3"
 	"github.com/mercari/tortoise/pkg/features"
@@ -470,7 +472,7 @@ func TestService_ModifyPodResource(t *testing.T) {
 									},
 									{
 										Name:  "GOMEMLIMIT",
-										Value: "100Mi",
+										Value: "100MiB",
 									},
 								},
 								Resources: v1.ResourceRequirements{
@@ -493,7 +495,7 @@ func TestService_ModifyPodResource(t *testing.T) {
 									},
 									{
 										Name:  "GOMEMLIMIT",
-										Value: "100Mi",
+										Value: "100MiB",
 									},
 								},
 								Resources: v1.ResourceRequirements{
@@ -528,7 +530,7 @@ func TestService_ModifyPodResource(t *testing.T) {
 									ContainerName: "istio-proxy",
 									Resource: v1.ResourceList{
 										v1.ResourceCPU:    resource.MustParse("50m"),
-										v1.ResourceMemory: resource.MustParse("200Mi"),
+										v1.ResourceMemory: resource.MustParse("2000Mi"),
 									},
 								},
 							},
@@ -548,7 +550,7 @@ func TestService_ModifyPodResource(t *testing.T) {
 								},
 								{
 									Name:  "GOMEMLIMIT",
-									Value: "200Mi",
+									Value: strconv.Itoa(int(ptr.To(resource.MustParse("200Mi")).Value())),
 								},
 							},
 							Resources: v1.ResourceRequirements{
@@ -571,17 +573,17 @@ func TestService_ModifyPodResource(t *testing.T) {
 								},
 								{
 									Name:  "GOMEMLIMIT",
-									Value: "200Mi",
+									Value: strconv.Itoa(int(ptr.To(resource.MustParse("2000Mi")).Value())),
 								},
 							},
 							Resources: v1.ResourceRequirements{
 								Requests: v1.ResourceList{
 									v1.ResourceCPU:    resource.MustParse("50m"),
-									v1.ResourceMemory: resource.MustParse("200Mi"),
+									v1.ResourceMemory: resource.MustParse("2000Mi"),
 								},
 								Limits: v1.ResourceList{
 									v1.ResourceCPU:    resource.MustParse("200m"),
-									v1.ResourceMemory: resource.MustParse("400Mi"),
+									v1.ResourceMemory: resource.MustParse("4000Mi"),
 								},
 							},
 						},