diff --git a/dll/win32/riched20/editor.c b/dll/win32/riched20/editor.c
index d08f781d1da..5c602d5f74e 100644
--- a/dll/win32/riched20/editor.c
+++ b/dll/win32/riched20/editor.c
@@ -4500,7 +4500,11 @@ static BOOL ME_IsCandidateAnURL(ME_TextEditor *editor, const ME_Cursor *start, i
 #define MAX_PREFIX_LEN 9
 #define X(str)  str, ARRAY_SIZE(str) - 1
   struct prefix_s {
+#ifdef __REACTOS__
+    const WCHAR text[MAX_PREFIX_LEN + 1];
+#else
     const WCHAR text[MAX_PREFIX_LEN];
+#endif
     int length;
   }prefixes[] = {
     {X(L"prospero:")},