diff --git a/pkg/apis/storage/validation/validation.go b/pkg/apis/storage/validation/validation.go
index a48b4d8720..83b588764a 100644
--- a/pkg/apis/storage/validation/validation.go
+++ b/pkg/apis/storage/validation/validation.go
@@ -187,11 +187,7 @@ func validateVolumeAttachmentSource(source *storage.VolumeAttachmentSource, fldP
 			allErrs = append(allErrs, field.Required(fldPath.Child("persistentVolumeName"), "must specify non empty persistentVolumeName"))
 		}
 	case source.InlineVolumeSpec != nil:
-		if utilfeature.DefaultFeatureGate.Enabled(features.CSIMigration) {
-			allErrs = append(allErrs, storagevalidation.ValidatePersistentVolumeSpec(source.InlineVolumeSpec, "", true, fldPath.Child("inlineVolumeSpec"))...)
-		} else {
-			allErrs = append(allErrs, field.Forbidden(fldPath, "may not specify inlineVolumeSpec when CSIMigration feature is disabled"))
-		}
+		allErrs = append(allErrs, storagevalidation.ValidatePersistentVolumeSpec(source.InlineVolumeSpec, "", true, fldPath.Child("inlineVolumeSpec"))...)
 	}
 	return allErrs
 }
diff --git a/pkg/apis/storage/validation/validation_test.go b/pkg/apis/storage/validation/validation_test.go
index 74e6eddba7..37405679d8 100644
--- a/pkg/apis/storage/validation/validation_test.go
+++ b/pkg/apis/storage/validation/validation_test.go
@@ -393,14 +393,6 @@ func TestVolumeAttachmentValidation(t *testing.T) {
 				},
 			},
 		},
-	}
-	for _, volumeAttachment := range migrationDisabledSuccessCases {
-		if errs := ValidateVolumeAttachment(&volumeAttachment); len(errs) != 0 {
-			t.Errorf("expected success: %v %v", volumeAttachment, errs)
-		}
-	}
-
-	migrationDisabledErrorCases := []storage.VolumeAttachment{
 		{
 			// InlineSpec specified with migration disabled
 			ObjectMeta: metav1.ObjectMeta{Name: "foo"},
@@ -413,13 +405,11 @@ func TestVolumeAttachmentValidation(t *testing.T) {
 			},
 		},
 	}
-
-	for _, volumeAttachment := range migrationDisabledErrorCases {
-		if errs := ValidateVolumeAttachment(&volumeAttachment); len(errs) == 0 {
-			t.Errorf("expected failure: %v %v", volumeAttachment, errs)
+	for _, volumeAttachment := range migrationDisabledSuccessCases {
+		if errs := ValidateVolumeAttachment(&volumeAttachment); len(errs) != 0 {
+			t.Errorf("expected success: %v %v", volumeAttachment, errs)
 		}
 	}
-
 }
 
 func TestVolumeAttachmentUpdateValidation(t *testing.T) {