diff --git a/libsrc/lynx/defdir.s b/libsrc/lynx/defdir.s
index c0fe19f4d..d15a99d5a 100644
--- a/libsrc/lynx/defdir.s
+++ b/libsrc/lynx/defdir.s
@@ -6,8 +6,7 @@
         .include "lynx.inc"
         .import         __STARTOFDIRECTORY__
         .import         __MAIN_START__
-        .import         __CODE_SIZE__, __DATA_SIZE__, __RODATA_SIZE__
-        .import         __STARTUP_SIZE__, __ONCE_SIZE__, __LOWCODE_SIZE__
+        .import         __STARTUP_LOAD__, __BSS_LOAD__
         .import         __BANK0BLOCKSIZE__
         .export         __DEFDIR__: absolute = 1
 
@@ -21,7 +20,7 @@ off0 = __STARTOFDIRECTORY__ + (__DIRECTORY_END__ - __DIRECTORY_START__)
 blocka = off0 / __BANK0BLOCKSIZE__
 ; Entry 0 - first executable
 block0 = off0 / __BANK0BLOCKSIZE__
-len0 = __STARTUP_SIZE__ + __ONCE_SIZE__ + __CODE_SIZE__ + __DATA_SIZE__ + __RODATA_SIZE__ + __LOWCODE_SIZE__
+len0 = __BSS_LOAD__ - __STARTUP_LOAD__
         .byte   <block0
         .word   off0 & (__BANK0BLOCKSIZE__ - 1)
         .byte   $88
diff --git a/targettest/Makefile b/targettest/Makefile
index be6842f0f..6c1de1101 100644
--- a/targettest/Makefile
+++ b/targettest/Makefile
@@ -692,9 +692,8 @@ EXELIST_bbc = \
 EXELIST_lunix = \
 	notavailable
 
-# none of the testcode can work on the lynx (library support is broken!)
 EXELIST_lynx = \
-	notavailable
+	minimal
 
 # Unlisted targets will try to build everything.
 # That lets us learn what they cannot build, and what settings