diff --git a/fsm/sim/top.cc b/fsm/sim/top.cc
index 449c98c..7af96ef 100644
--- a/fsm/sim/top.cc
+++ b/fsm/sim/top.cc
@@ -35,7 +35,7 @@ int main(int argc, char **argv) {
 	unsigned tickcount = 0;
   int last_led = tb->o_led;
 
-	for(int k=0; k<(1 << 12); k++) {
+	for(int k=0; k<(1 << 14); k++) {
     tick(++tickcount, tb, tfp);
 
     if (last_led != tb->o_led) {