diff --git a/dll/win32/riched20/paint.c b/dll/win32/riched20/paint.c
index 7212807238..2b0e91dddf 100644
--- a/dll/win32/riched20/paint.c
+++ b/dll/win32/riched20/paint.c
@@ -1279,6 +1279,9 @@ void ME_EnsureVisible(ME_TextEditor *editor, ME_Cursor *pCursor)
   ME_DisplayItem *pPara = pCursor->pPara;
   int x, y, yheight;
 
+#ifdef __REACTOS__
+  if (!pRow || !pPara) return;
+#endif
   assert(pRow);
   assert(pPara);