diff --git a/c64/kernal/screen/chrout_screen_jumptable_codes.s b/c64/kernal/screen/chrout_screen_jumptable_codes.s
index 499ed5ed..a3dc700d 100644
--- a/c64/kernal/screen/chrout_screen_jumptable_codes.s
+++ b/c64/kernal/screen/chrout_screen_jumptable_codes.s
@@ -93,7 +93,7 @@ chrout_screen_jumptable_hi:
 
 #else
 
-.if (mod(*, $2) == 1) { nop }          // align code so that vector never crosses page boundary
+.if (mod(*, $2) == 1) { brk }          // align code so that vector never crosses page boundary
 
 chrout_screen_jumptable:
 
@@ -120,6 +120,6 @@ chrout_screen_jumptable:
 	.word chrout_screen_DEL
 	.word chrout_screen_RETURN
 
-.if (mod(*, $2) == 1) { nop }          // make sure routine size is always the same, needed by build system
+.if (mod(*, $2) == 0) { brk }          // make sure routine size is always the same, needed by build system
 
 #endif