diff --git a/tools/cooja/contiki_tests/rime_collect_sky.csc b/tools/cooja/contiki_tests/rime_collect_sky.csc
index 4ae394e6c..4d3e9a9a2 100644
--- a/tools/cooja/contiki_tests/rime_collect_sky.csc
+++ b/tools/cooja/contiki_tests/rime_collect_sky.csc
@@ -12,7 +12,7 @@
     <radiomedium>
       se.sics.cooja.radiomediums.UDGM
       <transmitting_range>50.0</transmitting_range>
-      <interference_range>100.0</interference_range>
+      <interference_range>50.0</interference_range>
       <success_ratio_tx>1.0</success_ratio_tx>
       <success_ratio_rx>1.0</success_ratio_rx>
     </radiomedium>