diff --git a/LegitimateURLShortener.txt b/LegitimateURLShortener.txt
index fe48979b8..1b6eab897 100644
--- a/LegitimateURLShortener.txt
+++ b/LegitimateURLShortener.txt
@@ -278,7 +278,7 @@ $removeparam=itid
 ! https://github.com/DandelionSprout/adfilt/discussions/163#discussioncomment-715449
 $removeparam=full_trSrc
 $removeparam=cmpg_for_af
-$removeparam=/ICID/i,domain=~api.mapbox.com
+$removeparam=/^ICID/i,domain=~api.mapbox.com
 $removeparam=/^utm-/
 $removeparam=aff
 $removeparam=mc_cid