diff --git a/apps/backend/internal/drexa/api_integration_test.go b/apps/backend/internal/drexa/api_integration_test.go
index 872b139..298b7b8 100644
--- a/apps/backend/internal/drexa/api_integration_test.go
+++ b/apps/backend/internal/drexa/api_integration_test.go
@@ -142,6 +142,9 @@ func TestRegistrationFlow(t *testing.T) {
 		if login.Organizations[0].Kind != string(organization.KindPersonal) {
 			t.Fatalf("unexpected organization kind: %q", login.Organizations[0].Kind)
 		}
+		if login.Organizations[0].Slug != organization.ReservedSlug {
+			t.Fatalf("unexpected personal organization slug: %q", login.Organizations[0].Slug)
+		}
 	})
 
 	t.Run("drives list", func(t *testing.T) {
@@ -186,6 +189,9 @@ func TestRegistrationFlow(t *testing.T) {
 		if orgs[0].Kind != string(organization.KindPersonal) {
 			t.Fatalf("unexpected organization kind: %q", orgs[0].Kind)
 		}
+		if orgs[0].Slug != organization.ReservedSlug {
+			t.Fatalf("unexpected personal organization slug: %q", orgs[0].Slug)
+		}
 	})
 
 	t.Run("organizations/:orgSlug", func(t *testing.T) {
@@ -199,6 +205,9 @@ func TestRegistrationFlow(t *testing.T) {
 		if myOrg.Kind != string(organization.KindPersonal) {
 			t.Fatalf("unexpected personal org kind: %q", myOrg.Kind)
 		}
+		if myOrg.Slug != organization.ReservedSlug {
+			t.Fatalf("unexpected personal org slug: %q", myOrg.Slug)
+		}
 
 		orgID, err := uuid.NewV7()
 		if err != nil {
diff --git a/apps/backend/internal/organization/organization.go b/apps/backend/internal/organization/organization.go
index f3a7a42..e94228b 100644
--- a/apps/backend/internal/organization/organization.go
+++ b/apps/backend/internal/organization/organization.go
@@ -1,6 +1,7 @@
 package organization
 
 import (
+	"encoding/json"
 	"time"
 
 	"github.com/google/uuid"
@@ -26,6 +27,32 @@ type Organization struct {
 	UpdatedAt time.Time `bun:"updated_at,notnull,nullzero" json:"updatedAt"`
 }
 
+func (o Organization) MarshalJSON() ([]byte, error) {
+	type organizationJSON struct {
+		ID        uuid.UUID `json:"id"`
+		Kind      Kind      `json:"kind"`
+		Name      string    `json:"name"`
+		Slug      *string   `json:"slug,omitempty"`
+		CreatedAt time.Time `json:"createdAt"`
+		UpdatedAt time.Time `json:"updatedAt"`
+	}
+
+	slug := o.Slug
+	if o.Kind == KindPersonal {
+		s := ReservedSlug
+		slug = &s
+	}
+
+	return json.Marshal(organizationJSON{
+		ID:        o.ID,
+		Kind:      o.Kind,
+		Name:      o.Name,
+		Slug:      slug,
+		CreatedAt: o.CreatedAt,
+		UpdatedAt: o.UpdatedAt,
+	})
+}
+
 func newOrganizationID() (uuid.UUID, error) {
 	return uuid.NewV7()
 }