diff --git a/ijvm.c b/ijvm.c
index 4827882..ca59dcb 100644
--- a/ijvm.c
+++ b/ijvm.c
@@ -393,20 +393,23 @@ main (int argc, char *argv[])
     printf ("IJVM Trace of %s %s\n", argv[1], time_string);
   }
 
-  /* This is the interpreter main loop.  It essentially excecutes
-   * ijvm_execute_opcode until the program terminates (which is when
-   * an ireturn from main is encountered).  In each step, the
-   * instruction, its arguments and the top 8 elements on the stack
-   * are printed. */
+#ifndef PRINTSTACK
+#define PRINTSTACK (20)
+#endif
+
+	/* This is the interpreter main loop.  It essentially excecutes
+	 * ijvm_execute_opcode until the program terminates (which is when an ireturn
+	 * from main is encountered).  In each step, the instruction, its arguments
+	 * and the top PRINTSTACK elements on the stack are printed. */
 
   if (verbose)
-    ijvm_print_stack (i->stack + i->sp, MIN (i->sp - i->initial_sp, 8), TRUE);
+    ijvm_print_stack (i->stack + i->sp, MIN (i->sp - i->initial_sp, PRINTSTACK), TRUE);
   while (ijvm_active (i)) {
     if (verbose)
       ijvm_print_snapshot (i->method + i->pc);
     ijvm_execute_opcode (i);
     if (verbose)
-      ijvm_print_stack (i->stack + i->sp, MIN (i->sp - i->initial_sp, 8), FALSE);
+      ijvm_print_stack (i->stack + i->sp, MIN (i->sp - i->initial_sp, PRINTSTACK), FALSE);
   }
 
   ijvm_print_result (i);