diff --git a/gr-gmr1/apps/gmr_rach_scan.grc b/gr-gmr1/apps/gmr_rach_scan.grc
index 9333915..46e5dfa 100644
--- a/gr-gmr1/apps/gmr_rach_scan.grc
+++ b/gr-gmr1/apps/gmr_rach_scan.grc
@@ -644,7 +644,7 @@
     </param>
     <param>
       <key>taps</key>
-      <value>firdes.low_pass(1.0, 32 * samp_rate, 17e3, 2e3)</value>
+      <value>firdes.low_pass(1.0, 32 * samp_rate, 15e3, 2e3)</value>
     </param>
     <param>
       <key>nfilts</key>