diff --git a/platform/platform-impl/src/com/intellij/openapi/wm/impl/IdeFrameImpl.kt b/platform/platform-impl/src/com/intellij/openapi/wm/impl/IdeFrameImpl.kt
index 962ff34582a9..c52710881ef1 100644
--- a/platform/platform-impl/src/com/intellij/openapi/wm/impl/IdeFrameImpl.kt
+++ b/platform/platform-impl/src/com/intellij/openapi/wm/impl/IdeFrameImpl.kt
@@ -74,11 +74,12 @@ class IdeFrameImpl : JFrame(), IdeFrame, UiDataProvider, DisposableWindow {
   @JvmField
   internal var togglingFullScreenInProgress: Boolean = false
 
-  internal var lastInactiveMouseXAbs: Int = 0
-  internal var lastInactiveMouseYAbs: Int = 0
-  internal var mouseNotPressedYetSinceLastActivation: Boolean = false
+  private var lastInactiveMouseXAbs: Int = 0
+  private var lastInactiveMouseYAbs: Int = 0
+  private var mouseNotPressedYetSinceLastActivation: Boolean = false
   @ApiStatus.Internal
   var wasJustActivatedByClick: Boolean = false
+    private set
 
   private var isDisposed = false