diff --git a/scripts/examples/gn_silabs_example.sh b/scripts/examples/gn_silabs_example.sh
index 3877b5c98ad40a..5dbea0452fb7c6 100755
--- a/scripts/examples/gn_silabs_example.sh
+++ b/scripts/examples/gn_silabs_example.sh
@@ -193,7 +193,7 @@ else
                 shift
                 ;;
             --icd)
-                optArgs+="chip_enable_icd_server=true chip_openthread_ftd=false sl_enable_test_event_trigger=true"
+                optArgs+="chip_enable_icd_server=true chip_openthread_ftd=false sl_enable_test_event_trigger=true "
                 shift
                 ;;
             --low-power)