diff --git a/src/argv/ntapi_tt_array_utf8.c b/src/argv/ntapi_tt_array_utf8.c
index a2f6d0f..4cd3dfa 100644
--- a/src/argv/ntapi_tt_array_utf8.c
+++ b/src/argv/ntapi_tt_array_utf8.c
@@ -385,6 +385,7 @@ int32_t __stdcall __ntapi_tt_array_convert_utf8_to_utf16(
 		*wch++ = 0;
 	}
 
+	*wch++ = 0;
 	*warrv = 0;
 	*bytes_written = sizeof(wchar16_t) * (wch - buffer);