diff --git a/reference_guide/api_changes_list_2021.md b/reference_guide/api_changes_list_2021.md
index 8ea17da16..d57b59701 100644
--- a/reference_guide/api_changes_list_2021.md
+++ b/reference_guide/api_changes_list_2021.md
@@ -78,9 +78,6 @@ Please see [Incompatible API Changes](api_changes_list.md) on how to verify comp
 `com.intellij.execution.process.ColoredOutputTypeRegistry.getAnsiColorKey(int)` method removed
 : Use `com.intellij.execution.process.ColoredOutputTypeRegistryImpl.getAnsiColorKey(int)` instead
 
-`com.intellij.diagnostic.PerformanceWatcher.Snapshot` class now interface
-: Recompile the dependant code or use `com.intellij.diagnostic.PerformanceWatcherImpl.SnapshotImpl` instead
-
 `com.intellij.openapi.fileEditor.impl.EditorTabPresentationUtil.getEditorTabTitle(Project, VirtualFile, EditorWindow)` method parameter `EditorWindow` removed
 : This parameter never needed, but lead to code coupling