diff --git a/cfg/c16.cfg b/cfg/c16.cfg
index b67c66b96..9f54730af 100644
--- a/cfg/c16.cfg
+++ b/cfg/c16.cfg
@@ -7,7 +7,7 @@ MEMORY {
     ZP:       file = "", define = yes, start = $0002, size = $001A;
     LOADADDR: file = %O,               start = $0FFF, size = $0002;
     HEADER:   file = %O,               start = $1001, size = $000C;
-    MAIN:     file = %O,               start = $100D, size = $6FF3 - __STACKSIZE__;
+    MAIN:     file = %O,               start = $100D, size = $3FF3 - __STACKSIZE__;
 }
 SEGMENTS {
     ZEROPAGE: load = ZP,       type = zp;