diff --git a/cfg/atari-asm.cfg b/cfg/atari-asm.cfg
index 3fea61917..4ff7c3173 100644
--- a/cfg/atari-asm.cfg
+++ b/cfg/atari-asm.cfg
@@ -25,5 +25,6 @@ SEGMENTS {
     DATA:      load = RAM,        type = rw                 optional = yes;
     BSS:       load = RAM,        type = bss, define = yes, optional = yes;
     ZEROPAGE:  load = ZP,         type = zp,                optional = yes;
+    EXTZP:     load = ZP,         type = zp,                optional = yes; # to enable modules to be able to link to C and assembler programs
     AUTOSTRT:  load = TRAILER,    type = ro,                optional = yes;
 }