diff --git a/Python/bltinmodule.c b/Python/bltinmodule.c
index 2fabf67..a44c976 100644
--- a/Python/bltinmodule.c
+++ b/Python/bltinmodule.c
@@ -1582,10 +1582,7 @@
  * large to fit in a signed long.
  */
 static long
-get_len_of_range(lo, hi, step)
-	long lo;
-	long hi;
-	long step;	/* must be > 0 */
+get_len_of_range(long lo, long hi, long step)
 {
 	/* -------------------------------------------------------------
 	If lo >= hi, the range is empty.