diff --git a/reactor/Core/src/jetbrains/mps/logic/reactor/core/internal/LogicalImpl.kt b/reactor/Core/src/jetbrains/mps/logic/reactor/core/internal/LogicalImpl.kt
index ff1476e5..c68433d6 100644
--- a/reactor/Core/src/jetbrains/mps/logic/reactor/core/internal/LogicalImpl.kt
+++ b/reactor/Core/src/jetbrains/mps/logic/reactor/core/internal/LogicalImpl.kt
@@ -141,9 +141,6 @@ internal class LogicalImpl<T> : MutableLogical<T> {
             reconciler.reconcile(thisVal, otherVal)
         }
 
-        // copy usages
-        thisRepr.usagesCount += otherRepr.usagesCount
-
         // save other observers
         val otherObservers = ArrayList(otherRepr.parentObservers)
         mergeParentObservers(thisRepr, otherRepr)
@@ -169,14 +166,6 @@ internal class LogicalImpl<T> : MutableLogical<T> {
         find().parentObservers.remove(this to observer)
     }
 
-    override fun incUsagesCount(logicalOwner: LogicalOwner?) {
-        incUsages()
-    }
-
-    override fun usagesCount(): Int {
-        return usagesCount
-    }
-
     private fun find(): LogicalImpl<T> {
         val tmp = _parent
         if (tmp == null) return this
@@ -193,10 +182,6 @@ internal class LogicalImpl<T> : MutableLogical<T> {
         rank++
     }
 
-    private fun incUsages() {
-        usagesCount++
-    }
-
     private fun mergeParentObservers(thisRepr: LogicalImpl<T>, otherRepr: LogicalImpl<T>) {
         thisRepr.parentObservers.addAll(otherRepr.parentObservers)
         otherRepr.parentObservers.clear()
diff --git a/reactor/Core/src/jetbrains/mps/logic/reactor/logical/MutableLogical.java b/reactor/Core/src/jetbrains/mps/logic/reactor/logical/MutableLogical.java
index 74f7f513..c841a740 100644
--- a/reactor/Core/src/jetbrains/mps/logic/reactor/logical/MutableLogical.java
+++ b/reactor/Core/src/jetbrains/mps/logic/reactor/logical/MutableLogical.java
@@ -49,10 +49,6 @@ public interface MutableLogical<T> extends Logical<T> {
      */
     void setValue(T newValue);
 
-    void incUsagesCount(LogicalOwner logicalOwner);
-
-    int usagesCount();
-
     interface ValueReconciler<T> {
 
         void reconcile(T valueA, T valueB);