diff --git a/projects/common/interfaces/elements.ts b/projects/common/interfaces/elements.ts
index edda25790f3c3f2ab32c66d320a6780275c2f933..70d645c79f5b5ca8fa9441f08b690f36e1743636 100644
--- a/projects/common/interfaces/elements.ts
+++ b/projects/common/interfaces/elements.ts
@@ -39,7 +39,7 @@ export interface PositionedElement extends UIElement {
   positionProps: PositionProperties;
 }
 
-export interface PlayerElement {
+export interface PlayerElement extends UIElement {
   playerProps: PlayerProperties;
 }
 
@@ -229,7 +229,7 @@ export interface RadioButtonGroupElement extends InputElement {
 }
 
 export interface RadioButtonGroupComplexElement extends InputElement {
-  type: 'radio-group-images'
+  type: 'radio-group-images' // TODO better name
   columns: LikertColumn[];
   positionProps: PositionProperties;
   styles: BasicStyles;