--- OLD/ppm/picttoppm.c	Thu Jan  1 00:00:00 1970
+++ NEW/ppm/picttoppm.c	Thu Jan  1 00:00:00 1970
@@ -2241,8 +2241,7 @@
  *
  * Paul Heckbert	3 Sep 85
  */
-static void scan_line(x1,y1,x2,y2)
-     short x1,y1,x2,y2;
+static void scan_line(short int x1, short int y1, short int x2, short int y2)
 {
     int d, x, y, ax, ay, sx, sy, dx, dy;
 
@@ -2817,10 +2816,7 @@
 	skip(read_word() - 2);
 }
 
-static
-void picComment(type, length)
-word type;
-int length;
+static void picComment(word type, int length)
 {
 	switch (type) {
 	case 150: