diff --git a/sdrbase/util/db.h b/sdrbase/util/db.h
index de86e81bb..5e6741cac 100644
--- a/sdrbase/util/db.h
+++ b/sdrbase/util/db.h
@@ -22,7 +22,7 @@
 class CalcDb
 {
 public:
-	static double dbPower(double magsq, double floor = 1e-10);
+	static double dbPower(double magsq, double floor = 1e-12);
 	static double powerFromdB(double powerdB);
 };