diff --git a/icepll/icepll.cc b/icepll/icepll.cc
index 8c0aaaa..67262ae 100644
--- a/icepll/icepll.cc
+++ b/icepll/icepll.cc
@@ -120,7 +120,7 @@ bool analyze(
 				{
 					double fout = f_vco * exp2(-divq);
 
-					if (fabs(fout - f_pllout) < fabs(*best_fout - f_pllout) || !found_something) {
+					if (((fabs(fout - f_pllout) < fabs(*best_fout - f_pllout)) && (fout >= 16.0)) || !found_something) {
 						*best_fout = fout;
 						*best_divr = divr;
 						*best_divf = divf;