diff --git a/devicetypes/smartthings/smartsense-open-closed-sensor.src/smartsense-open-closed-sensor.groovy b/devicetypes/smartthings/smartsense-open-closed-sensor.src/smartsense-open-closed-sensor.groovy
index aaf14fb..7ff7cb8 100644
--- a/devicetypes/smartthings/smartsense-open-closed-sensor.src/smartsense-open-closed-sensor.groovy
+++ b/devicetypes/smartthings/smartsense-open-closed-sensor.src/smartsense-open-closed-sensor.groovy
@@ -22,6 +22,7 @@ metadata {
 		capability "Refresh"
 		capability "Temperature Measurement"
 		capability "Health Check"
+		capability "Sensor"
 
 		command "enrollResponse"
 
diff --git a/smartapps/smartthings/gentle-wake-up.src/gentle-wake-up.groovy b/smartapps/smartthings/gentle-wake-up.src/gentle-wake-up.groovy
index 89dd9f6..ed2fe8c 100644
--- a/smartapps/smartthings/gentle-wake-up.src/gentle-wake-up.groovy
+++ b/smartapps/smartthings/gentle-wake-up.src/gentle-wake-up.groovy
@@ -720,7 +720,7 @@ def completionPercentage() {
 
 	def now = new Date().getTime()
 	def timeElapsed = now - atomicState.start
-	def totalRunTime = totalRunTimeMillis()
+	def totalRunTime = totalRunTimeMillis() ?: 1
 	def percentComplete = timeElapsed / totalRunTime * 100
 	log.debug "percentComplete: ${percentComplete}"