diff --git a/src/ld65/cfg/c64.cfg b/src/ld65/cfg/c64.cfg
index 0d857c1d8..067755589 100644
--- a/src/ld65/cfg/c64.cfg
+++ b/src/ld65/cfg/c64.cfg
@@ -1,6 +1,6 @@
 MEMORY {
     ZP: start = $02, size = $1A, type = rw;
-    RAM: start = $7FF, size = $c801, file = %O;
+    RAM: start = $7FF, size = $c801, define = yes, file = %O;
 }
 SEGMENTS {
     CODE: load = RAM, type = wprot;
@@ -20,4 +20,4 @@ FEATURES {
 	    count = __DESTRUCTOR_COUNT__;
 }
 
-			
+