diff --git a/src/option.h b/src/option.h
index edf9058..696d70d 100644
--- a/src/option.h
+++ b/src/option.h
@@ -655,6 +655,9 @@
 #endif
 EXTERN int	p_remap;	/* 'remap' */
 EXTERN long	p_re;		/* 'regexpengine' */
+#ifdef FEAT_RENDER_OPTIONS
+EXTERN char_u	*p_rop;		/* 'renderoptions' */
+#endif
 EXTERN long	p_report;	/* 'report' */
 #if defined(FEAT_WINDOWS) && defined(FEAT_QUICKFIX)
 EXTERN long	p_pvh;		/* 'previewheight' */