diff --git a/src/4cade.a b/src/4cade.a
index 9fd201cd6..dd0a87de0 100644
--- a/src/4cade.a
+++ b/src/4cade.a
@@ -105,7 +105,7 @@ LastMover
 !pseudopc $D600 {
          !source "src/ui.font.data.a"
          !source "src/prodos.impl.a"
-  !if * > $DEFF {
+  !if * > $DFEF {
     !error "code is too large: ends at ", *
   }
 }
diff --git a/src/constants.a b/src/constants.a
index ec45ee42c..091391af6 100644
--- a/src/constants.a
+++ b/src/constants.a
@@ -16,8 +16,8 @@
 ; D000..D3FF - ProRWTS data
 ; D400..D5FF - ProRWTS code
 ; D600..D9FF - HGR font data
-; DA00..DD5C - ProRWTS glue code
-; DD5D..DFEF - unused
+; DA00..DDC5 - ProRWTS glue code
+; DDC6..DFEF - unused
 ; DFF0..DFFF - backup of stack (during gameplay and self-running demos)
 ;------------------------------------------------------------------------------