diff --git a/src/hangulin.c b/src/hangulin.c
index 4e1a7f8..540161a 100644
--- a/src/hangulin.c
+++ b/src/hangulin.c
@@ -35,10 +35,10 @@
 static int last_l = -1, last_ll = -1;
 static int hangul_keyboard_type = HANGUL_DEFAULT_KEYBOARD;
 
-static void convert_ks_to_3 __ARGS((const char_u *src, int *fp, int *mp, int *lp));
-static int convert_3_to_ks __ARGS((int fv, int mv, int lv, char_u *des));
-static int hangul_automata2 __ARGS((char_u *buf, unsigned int *c));
-static int hangul_automata3 __ARGS((char_u *buf, unsigned int *c));
+static void convert_ks_to_3(const char_u *src, int *fp, int *mp, int *lp);
+static int convert_3_to_ks(int fv, int mv, int lv, char_u *des);
+static int hangul_automata2(char_u *buf, unsigned int *c);
+static int hangul_automata3(char_u *buf, unsigned int *c);
 
 #define push(x)	 {stack[ sp++ ] = *(x); stack[sp++] = *((x)+1);}
 #define pop(x)	 {*((x) + 1) = stack[--sp]; *(x) = stack[--sp];}