diff --git a/packages/ketcher-core/src/domain/entities/sgroup.ts b/packages/ketcher-core/src/domain/entities/sgroup.ts
index eab98aa0c6..d1c5c57e89 100644
--- a/packages/ketcher-core/src/domain/entities/sgroup.ts
+++ b/packages/ketcher-core/src/domain/entities/sgroup.ts
@@ -628,14 +628,14 @@ export class SGroup {
     })
   }
 
-  static isSuperAtom(sGroup) {
+  static isSuperAtom(sGroup: SGroup): boolean {
     if (!sGroup) {
       return false
     }
     return sGroup.type === SGroup.TYPES.SUP
   }
 
-  static isDataSGroup(sGroup) {
+  static isDataSGroup(sGroup: SGroup): boolean {
     if (!sGroup) {
       return false
     }
diff --git a/packages/ketcher-react/src/script/ui/views/components/StructEditor/InfoPanel.tsx b/packages/ketcher-react/src/script/ui/views/components/StructEditor/InfoPanel.tsx
index 18657214a3..93bc2a7408 100644
--- a/packages/ketcher-react/src/script/ui/views/components/StructEditor/InfoPanel.tsx
+++ b/packages/ketcher-react/src/script/ui/views/components/StructEditor/InfoPanel.tsx
@@ -95,7 +95,7 @@ const InfoPanel: FC<InfoPanelProps> = (props) => {
   const groupName = sGroup?.data?.name
 
   useEffect(() => {
-    if (SGroup.isDataSGroup(sGroup)) {
+    if (sGroup && SGroup.isDataSGroup(sGroup)) {
       setSGroupData(`${sGroup.data?.fieldName}=${sGroup.data?.fieldValue}`)
     } else {
       setSGroupData(null)