--- jamvm-1.3.1.orig/src/jam.h	2005-07-17 23:53:34.000000000 +0200
+++ jamvm-1.3.1/src/jam.h	2005-07-17 23:54:17.000000000 +0200
@@ -548,7 +548,9 @@
 #endif
 
 /* default size of the Java stack */
+#ifndef DEFAULT_STACK
 #define DEFAULT_STACK 64*KB
+#endif
 
 /* size of emergency area - big enough to create
    a StackOverflow exception */