diff --git a/devicetypes/smartthings/enhanced-arrival-sensor.src/enhanced-arrival-sensor.groovy b/devicetypes/smartthings/enhanced-arrival-sensor.src/enhanced-arrival-sensor.groovy
index fc1e390..dd9f3cc 100644
--- a/devicetypes/smartthings/enhanced-arrival-sensor.src/enhanced-arrival-sensor.groovy
+++ b/devicetypes/smartthings/enhanced-arrival-sensor.src/enhanced-arrival-sensor.groovy
@@ -322,5 +322,4 @@ def enable() {
 def disable() {
 	sendEvent(name: "enabled", value: "off", isStateChange: true)
 	sendEvent(name: "presence", value: "not present", isStateChange: true)
-}
-
+}
\ No newline at end of file
diff --git a/smartapps/ady624/core.src/core.groovy b/smartapps/ady624/core.src/core.groovy
index 0e2d5f1..a09b874 100644
--- a/smartapps/ady624/core.src/core.groovy
+++ b/smartapps/ady624/core.src/core.groovy
@@ -8659,7 +8659,9 @@ private formatDayOfMonth(dom, dow) {
 	if (dom) {
 		if (dom.contains("week")) {
 			//relative day of week
-			return dom.replace("week", dow)
+            if (dow) {
+				return dom.replace("week", dow)
+            }
 		} else {
 			//dealing with a certain day of the month
 			if (dom.contains("last")) {