diff --git a/sw/airborne/arm7/test/LPC2138-ROM.ld b/sw/airborne/arm7/test/LPC2138-ROM.ld
index 1a4d03019f..92bee60231 100644
--- a/sw/airborne/arm7/test/LPC2138-ROM.ld
+++ b/sw/airborne/arm7/test/LPC2138-ROM.ld
@@ -10,8 +10,8 @@ STACK_SIZE = 0x400;
 /* lpc2129 mt */
 MEMORY
 {
-  ROM (rx) : ORIGIN = 0x00000000, LENGTH = 0x0003E000
-  RAM (rw) : ORIGIN = 0x40000000, LENGTH = 0x00004000
+  ROM (rx) : ORIGIN = 0x00000000, LENGTH = 512k
+  RAM (rw) : ORIGIN = 0x40000000, LENGTH = 32k
 }
 
 /* Section Definitions */