diff --git a/powerwall.sh b/powerwall.sh
index d4bb42ba..f11dd114 100755
--- a/powerwall.sh
+++ b/powerwall.sh
@@ -2311,7 +2311,7 @@ fi
 		checktemp) CHECKTEMP ${2} ${3} ${4} ${5} ${6} ${7} ${8} ${9} ${10};;
 		checkpower) CHECKPOWER ${2} ${3} ${4} ${5} ${6} ${7} ${8} ${9} ${10};;
 		check)
-			[ "${3}" == "" ] && checkrun="-help" || checkrun=${2}
+			([ "${3}" == "" ] || ([ "${2}" != "power" ] && [ "${2}" != "temp" ])) && checkrun="-help" || checkrun=${2}
 			case ${checkrun} in
 				power) CHECKPOWER ${3} ${4} ${5} ${6} ${7} ${8} ${9} ${10};;
 				temp) CHECKTEMP ${3} ${4} ${5} ${6} ${7} ${8} ${9} ${10};;