diff --git a/alpine/etc/periodic/15m/trim b/alpine/etc/periodic/15m/trim
index 415b91d1b..465f6d0b4 100755
--- a/alpine/etc/periodic/15m/trim
+++ b/alpine/etc/periodic/15m/trim
@@ -1,4 +1,8 @@
 #!/bin/sh
 
-# Windows always has TRIM support, clean out unused frequently
-[ "$(mobyplatform)" = "windows" ] && /sbin/fstrim /var
+# Windows and Mac have TRIM support, clean out unused frequently
+case "$(mobyplatform)" in
+  "windows"|"mac")
+     /sbin/fstrim /var
+     ;;
+esac