diff --git a/src/proto/syntax.pro b/src/proto/syntax.pro
index 82cebce..34fbcb8 100644
--- a/src/proto/syntax.pro
+++ b/src/proto/syntax.pro
@@ -4,7 +4,7 @@
 void syn_stack_apply_changes __ARGS((buf_T *buf));
 void syntax_end_parsing __ARGS((linenr_T lnum));
 int syntax_check_changed __ARGS((linenr_T lnum));
-int get_syntax_attr __ARGS((colnr_T col));
+int get_syntax_attr __ARGS((colnr_T col, int *can_spell));
 void syntax_clear __ARGS((buf_T *buf));
 void ex_syntax __ARGS((exarg_T *eap));
 int syntax_present __ARGS((buf_T *buf));
@@ -21,6 +21,7 @@
 void hl_set_font_name __ARGS((char_u *font_name));
 void hl_set_bg_color_name __ARGS((char_u *name));
 void hl_set_fg_color_name __ARGS((char_u *name));
+int hl_combine_attr __ARGS((int char_attr, int spell_attr));
 attrentry_T *syn_gui_attr2entry __ARGS((int attr));
 attrentry_T *syn_term_attr2entry __ARGS((int attr));
 attrentry_T *syn_cterm_attr2entry __ARGS((int attr));