--- a/lib/linebuffer.h
+++ b/lib/linebuffer.h
@@ -31,25 +31,16 @@
   char *buffer;
 };
 
-# ifndef PARAMS
-#  if defined PROTOTYPES || (defined __STDC__ && __STDC__)
-#   define PARAMS(Args) Args
-#  else
-#   define PARAMS(Args) ()
-#  endif
-# endif
-
 /* Initialize linebuffer LINEBUFFER for use. */
-void initbuffer PARAMS ((struct linebuffer *linebuffer));
+void initbuffer (struct linebuffer *linebuffer);
 
 /* Read an arbitrarily long line of text from STREAM into LINEBUFFER.
    Keep the newline; append a newline if it's the last line of a file
    that ends in a non-newline character.  Do not null terminate.
    Return LINEBUFFER, except at end of file return 0.  */
-struct linebuffer *readlinebuffer PARAMS ((struct linebuffer *linebuffer,
-					   FILE *stream));
+struct linebuffer *readlinebuffer (struct linebuffer *linebuffer, FILE *stream);
 
 /* Free linebuffer LINEBUFFER and its data, all allocated with malloc. */
-void freebuffer PARAMS ((struct linebuffer *));
+void freebuffer (struct linebuffer *);
 
 #endif /* LINEBUFFER_H */