diff --git a/components/lazdebuggers/lazdebuggerfp/fpdebugdebugger.pas b/components/lazdebuggers/lazdebuggerfp/fpdebugdebugger.pas
index 57d44948ca..e2d2cd24a4 100644
--- a/components/lazdebuggers/lazdebuggerfp/fpdebugdebugger.pas
+++ b/components/lazdebuggers/lazdebuggerfp/fpdebugdebugger.pas
@@ -1731,6 +1731,7 @@ end;
 procedure TFpDebugExceptionStepping.DoNtDllLoaded(ALib: TDbgLibrary);
 begin
   debugln(DBG_BREAKPOINTS, ['SetSoftwareExceptionBreakpoint RtlUnwind']);
+  FBreakPoints[bplRtlUnwind].Free;
   FBreakPoints[bplRtlUnwind] := FDebugger.AddBreak('RtlUnwindEx', ALib, False);
 end;