diff --git a/decode.cc b/decode.cc
index a224363..2c00c03 100644
--- a/decode.cc
+++ b/decode.cc
@@ -84,7 +84,7 @@ public:
 	{
 		cmplx P = cor(samples[search_pos+symbol_len] * conj(samples[search_pos+2*symbol_len]));
 		value R = value(0.5) * pwr(norm(samples[search_pos+2*symbol_len]));
-		value min_R = 0.0001 * symbol_len;
+		value min_R = 0.00001 * symbol_len;
 		R = std::max(R, min_R);
 		value timing = match(norm(P) / (R * R));
 		value phase = delay(arg(P));