diff --git a/package/kernel/om-watchdog/files/om-watchdog.init b/package/kernel/om-watchdog/files/om-watchdog.init
index 47105f2773..d68fb15d60 100644
--- a/package/kernel/om-watchdog/files/om-watchdog.init
+++ b/package/kernel/om-watchdog/files/om-watchdog.init
@@ -16,19 +16,25 @@ get_gpio() {
 		local board=$(ar71xx_board_name)
 
 		case "$board" in
-			"om2p"|"om2p-hs"|"om2p-hsv2")
+			"om2p" | \
+			"om2p-hs" | \
+			"om2p-hsv2")
 				return 12
 				;;
-			"om2pv2"|"om2p-lc")
+			"om2pv2" | \
+			"om2p-lc")
 				return 26
 				;;
-			"om5p"|"om5p-an")
+			"om5p" | \
+			"om5p-an")
 				return 11
 				;;
 			"mr600v2")
 				return 15
 				;;
-			"mr900"|"mr900v2"|"mr1750")
+			"mr900" | \
+			"mr900v2" | \
+			"mr1750")
 				return 16
 				;;
 		esac