diff --git a/internal/config/config.go b/internal/config/config.go
index df5b971ee8..3be23a2451 100644
--- a/internal/config/config.go
+++ b/internal/config/config.go
@@ -384,14 +384,27 @@ func MergeConfig(configRecords []*fftypes.ConfigRecord) error {
 		if err := json.Unmarshal(c.Value, &val); err != nil {
 			return err
 		}
-		switch val.(type) {
+		switch v := val.(type) {
 		case map[string]interface{}:
 			_ = s.ReadConfig(bytes.NewBuffer(c.Value))
 			for _, k := range s.AllKeys() {
-				viper.Set(fmt.Sprintf("%s.%s", c.Key, k), s.Get(k))
+				value := s.Get(k)
+				if reflect.TypeOf(value).Kind() == reflect.Slice {
+					configSlice := value.([]interface{})
+					for i := range configSlice {
+						viper.Set(fmt.Sprintf("%s.%s.%d", c.Key, k, i), configSlice[i])
+					}
+				} else {
+					viper.Set(fmt.Sprintf("%s.%s", c.Key, k), value)
+				}
+			}
+		case []interface{}:
+			_ = s.ReadConfig(bytes.NewBuffer(c.Value))
+			for i := range v {
+				viper.Set(fmt.Sprintf("%s.%d", c.Key, i), v[i])
 			}
 		default:
-			viper.Set(c.Key, val)
+			viper.Set(c.Key, v)
 		}
 	}
 	return nil
diff --git a/internal/config/config_test.go b/internal/config/config_test.go
index 49a7b77f7b..9e2c61ae43 100644
--- a/internal/config/config_test.go
+++ b/internal/config/config_test.go
@@ -187,28 +187,56 @@ func TestMergeConfigOk(t *testing.T) {
 			}
 		}
 	}`)
-	conf2 := fftypes.Byteable(`{
+	confNumber := fftypes.Byteable(`{
 		"some":  {
 			"more": {
-				"stuff": "value2"
+				"stuff": 15
 			}
 		}
 	}`)
 	conf3 := fftypes.Byteable(`"value3"`)
+	confNestedSlice := fftypes.Byteable(`{
+		"nestedslice": [
+			{
+				"firstitemfirstkey": "firstitemfirstkeyvalue",
+				"firstitemsecondkey": "firstitemsecondkeyvalue"
+			},
+			{
+				"seconditemfirstkey": "seconditemfirstkeyvalue",
+				"seconditemsecondkey": "seconditemsecondkeyvalue"
+			}
+		]
+	}`)
+	confBaseSlice := fftypes.Byteable(`[
+		{
+			"firstitemfirstkey": "firstitemfirstkeyvalue",
+			"firstitemsecondkey": "firstitemsecondkeyvalue"
+		},
+		{
+			"seconditemfirstkey": "seconditemfirstkeyvalue",
+			"seconditemsecondkey": "seconditemsecondkeyvalue"
+		}
+	]`)
 
 	viper.Reset()
 	viper.Set("base.something", "value4")
 	err := MergeConfig([]*fftypes.ConfigRecord{
 		{Key: "base", Value: conf1},
-		{Key: "base", Value: conf2},
+		{Key: "base", Value: confNumber},
 		{Key: "base.some.plain", Value: conf3},
+		{Key: "base", Value: confNestedSlice},
+		{Key: "base.slice", Value: confBaseSlice},
 	})
 	assert.NoError(t, err)
 
 	assert.Equal(t, "value1", viper.Get("base.some.nested.stuff"))
-	assert.Equal(t, "value2", viper.Get("base.some.more.stuff"))
+	assert.Equal(t, 15, viper.GetInt("base.some.more.stuff"))
 	assert.Equal(t, "value3", viper.Get("base.some.plain"))
 	assert.Equal(t, "value4", viper.Get("base.something"))
+	assert.Equal(t, "firstitemfirstkeyvalue", viper.Get("base.nestedslice.0.firstitemfirstkey"))
+	assert.Equal(t, "seconditemsecondkeyvalue", viper.Get("base.nestedslice.1.seconditemsecondkey"))
+	assert.Equal(t, "firstitemfirstkeyvalue", viper.Get("base.slice.0.firstitemfirstkey"))
+	assert.Equal(t, "seconditemsecondkeyvalue", viper.Get("base.slice.1.seconditemsecondkey"))
 
 }