diff --git a/src/ld65/cfg/c128.cfg b/src/ld65/cfg/c128.cfg
index dc9f873b9..3bbffb076 100644
--- a/src/ld65/cfg/c128.cfg
+++ b/src/ld65/cfg/c128.cfg
@@ -1,6 +1,6 @@
 MEMORY {
     ZP: start = $02, size = $1A, type = rw;
-    RAM: start = $1bff, size = $a401, file = %O;
+    RAM: start = $1bff, size = $a401, define = yes, file = %O;
 }
 SEGMENTS {
     CODE: load = RAM, type = wprot;
@@ -18,6 +18,10 @@ FEATURES {
 	    type = destructor,
 	    label = __DESTRUCTOR_TABLE__,
 	    count = __DESTRUCTOR_COUNT__;
+    CONDES: segment = RODATA,
+	    type = 2,
+	    label = __IRQFUNC_TABLE__,
+	    count = __IRQFUNC_COUNT__;
 }
 SYMBOLS {
     __STACKSIZE__ = $800;	# 2K stack