diff --git a/services/client/common/models/address-observation.json b/services/client/common/models/address-observation.json
index 53b6155ec..147e19f07 100644
--- a/services/client/common/models/address-observation.json
+++ b/services/client/common/models/address-observation.json
@@ -8,27 +8,27 @@
         }
     },
     "properties": {
-      "id": {
-        "type": "Number",
-        "id": true,
-        "description": "Identifier"
-      },
-      "description": {
-        "type": "string",
-        "required": true
-      }
+        "id": {
+            "type": "Number",
+            "id": true,
+            "description": "Identifier"
+        },
+        "description": {
+            "type": "string",
+            "required": true
+        }
     },
     "relations": {
-      "address": {
-        "type": "belongsTo",
-        "model": "Address",
-        "foreignKey": "addressFk"
-      },
-      "observationType": {
-        "type": "belongsTo",
-        "model": "ObservationType",
-        "foreignKey": "observationTypeFk"
-      }
+        "address": {
+            "type": "belongsTo",
+            "model": "Address",
+            "foreignKey": "addressFk"
+        },
+        "observationType": {
+            "type": "belongsTo",
+            "model": "ObservationType",
+            "foreignKey": "observationTypeFk"
+        }
     }
-  }
+}
   
\ No newline at end of file
diff --git a/services/loopback/common/methods/client/specs/getAverageInvoiced.spec.js b/services/loopback/common/methods/client/specs/getAverageInvoiced.spec.js
new file mode 100644
index 000000000..46072461a
--- /dev/null
+++ b/services/loopback/common/methods/client/specs/getAverageInvoiced.spec.js
@@ -0,0 +1,18 @@
+const getAverageInvoiced = require('../getAverageInvoiced');
+const {rawSql} = require('./helpers');
+const model = {
+    remoteMethod: () => {}
+};
+
+rawSql(model);
+getAverageInvoiced(model);
+
+describe('client getAverageInvoiced()', () => {
+    it('should call the getAverageInvoiced method', done => {
+        model.getAverageInvoiced(101)
+            .then(response => {
+                expect(response.invoiced).toEqual(0);
+                done();
+            });
+    });
+});