diff --git a/src/ld65/cfg/atari.cfg b/src/ld65/cfg/atari.cfg
index fe9a293a6..7fb6d2027 100644
--- a/src/ld65/cfg/atari.cfg
+++ b/src/ld65/cfg/atari.cfg
@@ -2,7 +2,8 @@ FEATURES {
     STARTADDRESS: default = $2E00;
 }
 SYMBOLS {
-    __STACKSIZE__ = $800;	# 2K stack
+    __STACKSIZE__	= $800;		# 2K stack
+    __RESERVED_MEMORY__: value = $0, weak = yes;
 }
 MEMORY {
     ZP:      start = $0082, size = $007E, type = rw, define = yes;