diff -Naur a/src/core/uae/gencpu.c b/src/core/uae/gencpu.c
--- a/src/core/uae/gencpu.c	2007-11-20 18:01:02.000000000 +0000
+++ b/src/core/uae/gencpu.c	2024-05-12 00:30:47.631182594 +0000
@@ -304,7 +304,7 @@
     insn_n_cycles += 4;
 } 
 
-static void fill_prefetch_next_1 (needcycles)
+static void fill_prefetch_next_1 (int needcycles)
 {
     if (needcycles && using_ce) {
 	printf ("\tint lostcycles;\n");