diff --git a/peak_det_eval.grc b/peak_det_eval.grc
index 71222b2..986a55c 100644
--- a/peak_det_eval.grc
+++ b/peak_det_eval.grc
@@ -437,7 +437,7 @@
     <key>analog_sig_source_x</key>
     <param>
       <key>amp</key>
-      <value>0.0</value>
+      <value>0.1</value>
     </param>
     <param>
       <key>alias</key>