diff --git a/frontend/__tests__/store/modules/formData/mutations.spec.js b/frontend/__tests__/store/modules/formData/mutations.spec.js
index bab52f3..5f1e9fa 100644
--- a/frontend/__tests__/store/modules/formData/mutations.spec.js
+++ b/frontend/__tests__/store/modules/formData/mutations.spec.js
@@ -127,7 +127,7 @@ describe('Form data mutations', () => {
         expect(state.service).toBeNull()
     })
 
-    it('setService sets service in store', async () => {
+    it('setService sets service with subservices in store', async () => {
         const state = {
             service: {
                 id: 1,
@@ -154,18 +154,18 @@ describe('Form data mutations', () => {
             count: 2,
             combinable: [
                 1,
-                2,
-                3
+                2
             ],
             subServiceCounts: {
-                2: 1
+                2: 1,
+                3: 1
             }
         })
 
         expect(state.appointmentCounts).toStrictEqual({
             1: 2,
             2: 1,
-            3: 0
+            3: 1
         })
         expect(state.appointmentCount).toBe(2)
         expect(state.service).toStrictEqual({
@@ -173,11 +173,11 @@ describe('Form data mutations', () => {
             name: 'Service 1',
             count: 2,
             combinable: [
-                2,
-                3
+                2
             ],
             subServiceCounts: {
-                2: 1
+                2: 1,
+                3: 1
             },
             subServices: [
                 {
@@ -186,12 +186,62 @@ describe('Form data mutations', () => {
                 },
                 {
                     id: 3,
-                    count: 0
+                    count: 1
                 }
             ]
         })
     })
 
+    it('setService sets service withouth subservices in store', async () => {
+        const state = {
+            service: {
+                id: 1,
+                name: 'Service',
+                maxQuantity: 3,
+                combinable: [
+                    2,
+                    3
+                ]
+            },
+            appointment: {
+                authKey: 'aaa',
+                processId: 'bbb'
+            },
+            appointmentCounts: {
+                1: 3
+            },
+            appointmentCount: 3
+        }
+
+        mutations.setService(state, {
+            id: 1,
+            name: 'Service 1',
+            count: 2,
+            combinable: [
+                1,
+                2,
+                3
+            ],
+            subServiceCounts: {}
+        })
+
+        expect(state.appointmentCounts).toStrictEqual({
+            1: 2
+        })
+        expect(state.appointmentCount).toBe(2)
+        expect(state.service).toStrictEqual({
+            id: 1,
+            name: 'Service 1',
+            count: 2,
+            combinable: [
+                2,
+                3
+            ],
+            subServiceCounts: {},
+            subServices: []
+        })
+    })
+
     it('setAppointment sets appointment in store', async () => {
         state.appointment = {
             authKey: 'aaa',
diff --git a/frontend/src/store/modules/formData/mutations.js b/frontend/src/store/modules/formData/mutations.js
index 0279e88..164515a 100644
--- a/frontend/src/store/modules/formData/mutations.js
+++ b/frontend/src/store/modules/formData/mutations.js
@@ -41,14 +41,22 @@ export default {
         }
 
         if (! service.subServices) {
-            service.subServices = combinable.map((subServiceId) => {
-                return {
-                    id: subServiceId,
-                    count: service.subServiceCounts && service.subServiceCounts[subServiceId]
-                        ? service.subServiceCounts[subServiceId]
-                        : 0
+            if (service.subServiceCounts) {
+                service.subServices = []
+                for (const [subServiceId, subServiceCount] of Object.entries(service.subServiceCounts)) {
+                    service.subServices.push({
+                        id: parseInt(subServiceId),
+                        count: subServiceCount
+                    })
                 }
-            })
+            } else {
+                service.subServices = combinable.map((subServiceId) => {
+                    return {
+                        id: subServiceId,
+                        count: 0
+                    }
+                })
+            }
         }
 
         service.subServices.forEach((service) => {