diff --git a/ide/debugmanager.pas b/ide/debugmanager.pas
index 184f91075b..2e8b2271a3 100644
--- a/ide/debugmanager.pas
+++ b/ide/debugmanager.pas
@@ -605,7 +605,7 @@ var
   AnUnitInfo: TLazProjectFile;
 begin
   Result := False;
-  if Destroying then exit;
+  if Destroying or (Filename = '') then exit;
   (* The below currently does not work for unsaved projects *)
   //Result := FilenameIsAbsolute(Filename);
   //if Result then exit;