diff --git a/src/services/consumption.service.spec.ts b/src/services/consumption.service.spec.ts
index 6d57b2bc94d606bf9db975131d354ea09210d3e0..271e2f4d04fcbfee7d8119b2f93012d83448714e 100644
--- a/src/services/consumption.service.spec.ts
+++ b/src/services/consumption.service.spec.ts
@@ -52,7 +52,18 @@ describe('Consuption service', () => {
     },
   ]
   describe('getGraphData method', () => {
+    it('should return null', async () => {
+      const result = await consumptionDataManager.getGraphData(
+        mockTimePeriod,
+        TimeStep.DAY,
+        [],
+        mockTimePeriodComparison,
+        false
+      )
+      expect(result).toBeNull()
+    })
     it('shoud return a mapped data for one fluid', async () => {
+      console.log(fluidTypes)
       mockFetchFluidData.mockResolvedValueOnce(mockFetchDataActual)
       mockFetchFluidData.mockResolvedValueOnce(mockFetchDataComparison)
       const mockResult = {
diff --git a/src/services/consumption.service.ts b/src/services/consumption.service.ts
index 22f3c7337969e23a78c668ef6bead16ece083a90..6aaa64512651d1f626846421cce52cc6eaa5d8d6 100644
--- a/src/services/consumption.service.ts
+++ b/src/services/consumption.service.ts
@@ -56,7 +56,6 @@ export default class ConsumptionDataManager {
         fluidTypes[0],
         compareTimePeriod
       )
-
       // formatting data
       const formattedData = this.formatGraphDataManage(
         fetchedData,
@@ -69,6 +68,7 @@ export default class ConsumptionDataManager {
 
       // mapping result to contract
       mappedData = formattedData
+      return mappedData
     } else if (fluidTypes.length > 1 || isHome) {
       const toBeAgreggatedData: ISingleFluidChartData[] = []
       for (const fluidType of fluidTypes) {