diff --git a/ketcher-autotests/tests/Templates/Functional-Groups/Functional-Group-Tools/functional-group-tools.spec.ts-snapshots/Templates---Functional-Group-Tools2-Contract-Functional-Group-on-a-structure-1-chromium-linux.png b/ketcher-autotests/tests/Templates/Functional-Groups/Functional-Group-Tools/functional-group-tools.spec.ts-snapshots/Templates---Functional-Group-Tools2-Contract-Functional-Group-on-a-structure-1-chromium-linux.png
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diff --git a/ketcher-autotests/tests/Templates/Functional-Groups/Functional-Group-Tools/functional-group-tools.spec.ts-snapshots/Templates---Functional-Group-Tools2-Expand-Functional-Group-on-a-structure-1-chromium-linux.png b/ketcher-autotests/tests/Templates/Functional-Groups/Functional-Group-Tools/functional-group-tools.spec.ts-snapshots/Templates---Functional-Group-Tools2-Expand-Functional-Group-on-a-structure-1-chromium-linux.png
index 8819bf99be..a48f875b94 100644
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diff --git a/ketcher-autotests/tests/Templates/Functional-Groups/functional-groups.spec.ts-snapshots/Functional-Groups-Add-a-custom-structure-to-a--13afb--an-expanded-functional-group-and-contract-it-1-chromium-linux.png b/ketcher-autotests/tests/Templates/Functional-Groups/functional-groups.spec.ts-snapshots/Functional-Groups-Add-a-custom-structure-to-a--13afb--an-expanded-functional-group-and-contract-it-1-chromium-linux.png
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diff --git a/ketcher-autotests/tests/Templates/Functional-Groups/functional-groups.spec.ts-snapshots/Functional-Groups-Check-that-expanded-Functional-Groups-not-overlap-each-other-1-chromium-linux.png b/ketcher-autotests/tests/Templates/Functional-Groups/functional-groups.spec.ts-snapshots/Functional-Groups-Check-that-expanded-Functional-Groups-not-overlap-each-other-1-chromium-linux.png
index b1679e3e58..0cbf2ac5c4 100644
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diff --git a/packages/ketcher-react/src/script/ui/views/components/ContextMenu/hooks/useFunctionalGroupEoc.ts b/packages/ketcher-react/src/script/ui/views/components/ContextMenu/hooks/useFunctionalGroupEoc.ts
index 69c9d7dfff..0f96aeb7d7 100644
--- a/packages/ketcher-react/src/script/ui/views/components/ContextMenu/hooks/useFunctionalGroupEoc.ts
+++ b/packages/ketcher-react/src/script/ui/views/components/ContextMenu/hooks/useFunctionalGroupEoc.ts
@@ -1,4 +1,4 @@
-import { Action, setExpandSGroup } from 'ketcher-core';
+import { Action, setExpandMonomerSGroup } from 'ketcher-core';
 import { useCallback } from 'react';
 import { useDispatch } from 'react-redux';
 import { useAppContext } from 'src/hooks';
@@ -27,7 +27,7 @@ const useFunctionalGroupEoc = () => {
 
       selectedFunctionalGroups?.forEach((functionalGroup) => {
         action.mergeWith(
-          setExpandSGroup(molecule, functionalGroup.relatedSGroupId, {
+          setExpandMonomerSGroup(molecule, functionalGroup.relatedSGroupId, {
             expanded: toExpand,
           }),
         );
@@ -47,17 +47,8 @@ const useFunctionalGroupEoc = () => {
       ),
     );
   }, []);
-  const disabled = useCallback(({ props }: Params) => {
-    const editor = getKetcherInstance().editor as Editor;
-    const molecule = editor.render.ctab.molecule;
-    return Boolean(
-      props?.functionalGroups?.every((functionalGroup) =>
-        functionalGroup?.relatedSGroup.isNotContractible(molecule),
-      ),
-    );
-  }, []);
 
-  return [handler, hidden, disabled] as const;
+  return [handler, hidden] as const;
 };
 
 export default useFunctionalGroupEoc;
diff --git a/packages/ketcher-react/src/script/ui/views/components/ContextMenu/menuItems/FunctionalGroupMenuItems.tsx b/packages/ketcher-react/src/script/ui/views/components/ContextMenu/menuItems/FunctionalGroupMenuItems.tsx
index 6655a3745c..267387ac83 100644
--- a/packages/ketcher-react/src/script/ui/views/components/ContextMenu/menuItems/FunctionalGroupMenuItems.tsx
+++ b/packages/ketcher-react/src/script/ui/views/components/ContextMenu/menuItems/FunctionalGroupMenuItems.tsx
@@ -10,18 +10,14 @@ import {
 const FunctionalGroupMenuItems: FC<
   MenuItemsProps<FunctionalGroupsContextMenuProps>
 > = (props) => {
-  const [
-    handleExpandOrContract,
-    ExpandOrContractHidden,
-    ExpandOrContractDisabled,
-  ] = useFunctionalGroupEoc();
+  const [handleExpandOrContract, ExpandOrContractHidden] =
+    useFunctionalGroupEoc();
   const handleRemove = useFunctionalGroupRemove();
 
   return (
     <>
       <Item
         {...props}
-        disabled={(params) => ExpandOrContractDisabled(params)}
         hidden={(params) => ExpandOrContractHidden(params, true)}
         onClick={(params) => handleExpandOrContract(params, true)}
       >
@@ -29,7 +25,6 @@ const FunctionalGroupMenuItems: FC<
       </Item>
       <Item
         {...props}
-        disabled={(params) => ExpandOrContractDisabled(params)}
         hidden={(params) => ExpandOrContractHidden(params, false)}
         onClick={(params) => handleExpandOrContract(params, false)}
       >