diff --git a/cfg/atari5200.cfg b/cfg/atari5200.cfg
index e8f6d44a5..a487bdcab 100644
--- a/cfg/atari5200.cfg
+++ b/cfg/atari5200.cfg
@@ -15,7 +15,7 @@ MEMORY {
 SEGMENTS {
     ZEROPAGE:  load = ZP,             type = zp,                optional = yes;
     EXTZP:     load = ZP,             type = zp,                optional = yes;
-    DLIST:     load = ROM  ,          type = ro,  define = yes, optional = yes;
+    DLIST:     load = ROM,            type = ro,  define = yes, optional = yes;
     STARTUP:   load = ROM,            type = ro,  define = yes, optional = yes;
     LOWCODE:   load = ROM,            type = ro,  define = yes, optional = yes;
     ONCE:      load = ROM,            type = ro,                optional = yes;
diff --git a/libsrc/atari5200/clrscr.s b/libsrc/atari5200/clrscr.s
index 041f34a67..d92419b9e 100644
--- a/libsrc/atari5200/clrscr.s
+++ b/libsrc/atari5200/clrscr.s
@@ -7,8 +7,9 @@
         .export         _clrscr
         .include        "atari5200.inc"
         .importzp       ptr1
+        .importzp       screen_width, screen_height
 
-SCRSIZE =       480             ; 20x24: size of default conio atari5200 screen
+SCRSIZE = screen_width * screen_height
 
 _clrscr:lda     SAVMSC          ; screen memory
         sta     ptr1