diff --git a/libnymea/interfaces/blind.json b/libnymea/interfaces/blind.json
index 947dac2f..635cc6a3 100644
--- a/libnymea/interfaces/blind.json
+++ b/libnymea/interfaces/blind.json
@@ -1,5 +1,5 @@
 {
-    "extends": "simpleclosable"
+    "extends": "simpleclosable",
     "actions": [
         {
             "name": "stop"
diff --git a/libnymea/interfaces/shutter.json b/libnymea/interfaces/shutter.json
index 947dac2f..635cc6a3 100644
--- a/libnymea/interfaces/shutter.json
+++ b/libnymea/interfaces/shutter.json
@@ -1,5 +1,5 @@
 {
-    "extends": "simpleclosable"
+    "extends": "simpleclosable",
     "actions": [
         {
             "name": "stop"