diff --git a/platform/xdebugger-impl/src/com/intellij/xdebugger/impl/breakpoints/XLineBreakpointImpl.java b/platform/xdebugger-impl/src/com/intellij/xdebugger/impl/breakpoints/XLineBreakpointImpl.java
index a782cd89df0c..258606a2b015 100644
--- a/platform/xdebugger-impl/src/com/intellij/xdebugger/impl/breakpoints/XLineBreakpointImpl.java
+++ b/platform/xdebugger-impl/src/com/intellij/xdebugger/impl/breakpoints/XLineBreakpointImpl.java
@@ -1,4 +1,4 @@
-// Copyright 2000-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+// Copyright 2000-2019 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
 package com.intellij.xdebugger.impl.breakpoints;
 
 import com.intellij.openapi.application.ApplicationManager;
@@ -263,6 +263,7 @@ public class XLineBreakpointImpl<P extends XBreakpointProperties> extends XBreak
   public void updatePosition() {
     if (myHighlighter != null && myHighlighter.isValid()) {
       setLine(myHighlighter.getDocument().getLineNumber(myHighlighter.getStartOffset()), false);
+      mySourcePosition = null; // need to clear this no matter what as the offset may be cached inside
     }
   }