diff --git a/Systems/upper-ecam.xml b/Systems/upper-ecam.xml
index d18f9969..00b8d03a 100644
--- a/Systems/upper-ecam.xml
+++ b/Systems/upper-ecam.xml
@@ -15,7 +15,7 @@
 		<input>
 			<condition>
 				<equals>
-					<property>options/eng</property>
+					<property>/options/eng</property>
 					<value>IAE</value>
 				</equals>
 			</condition>
@@ -42,7 +42,7 @@
 		<input>
 			<condition>
 				<equals>
-					<property>options/eng</property>
+					<property>/options/eng</property>
 					<value>IAE</value>
 				</equals>
 			</condition>
@@ -69,7 +69,7 @@
 		<input>
 			<condition>
 				<equals>
-					<property>options/eng</property>
+					<property>/options/eng</property>
 					<value>IAE</value>
 				</equals>
 			</condition>
@@ -96,7 +96,7 @@
 		<input>
 			<condition>
 				<equals>
-					<property>options/eng</property>
+					<property>/options/eng</property>
 					<value>IAE</value>
 				</equals>
 			</condition>
@@ -123,7 +123,7 @@
 		<input>
 			<condition>
 				<equals>
-					<property>options/eng</property>
+					<property>/options/eng</property>
 					<value>IAE</value>
 				</equals>
 			</condition>
@@ -150,7 +150,7 @@
 		<input>
 			<condition>
 				<equals>
-					<property>options/eng</property>
+					<property>/options/eng</property>
 					<value>CFM</value>
 				</equals>
 			</condition>
@@ -166,7 +166,7 @@
 		<input>
 			<condition>
 				<equals>
-					<property>options/eng</property>
+					<property>/options/eng</property>
 					<value>IAE</value>
 				</equals>
 			</condition>
@@ -189,7 +189,7 @@
 		<input>
 			<condition>
 				<equals>
-					<property>options/eng</property>
+					<property>/options/eng</property>
 					<value>CFM</value>
 				</equals>
 			</condition>
@@ -205,7 +205,7 @@
 		<input>
 			<condition>
 				<equals>
-					<property>options/eng</property>
+					<property>/options/eng</property>
 					<value>IAE</value>
 				</equals>
 			</condition>
@@ -228,7 +228,7 @@
 		<input>
 			<condition>
 				<equals>
-					<property>options/eng</property>
+					<property>/options/eng</property>
 					<value>CFM</value>
 				</equals>
 			</condition>
@@ -245,7 +245,7 @@
 		<input>
 			<condition>
 				<equals>
-					<property>options/eng</property>
+					<property>/options/eng</property>
 					<value>IAE</value>
 				</equals>
 			</condition>
@@ -269,7 +269,7 @@
 		<input>
 			<condition>
 				<equals>
-					<property>options/eng</property>
+					<property>/options/eng</property>
 					<value>CFM</value>
 				</equals>
 			</condition>
@@ -286,7 +286,7 @@
 		<input>
 			<condition>
 				<equals>
-					<property>options/eng</property>
+					<property>/options/eng</property>
 					<value>IAE</value>
 				</equals>
 			</condition>
@@ -310,7 +310,7 @@
 		<input>
 			<condition>
 				<equals>
-					<property>options/eng</property>
+					<property>/options/eng</property>
 					<value>CFM</value>
 				</equals>
 			</condition>
@@ -327,7 +327,7 @@
 		<input>
 			<condition>
 				<equals>
-					<property>options/eng</property>
+					<property>/options/eng</property>
 					<value>IAE</value>
 				</equals>
 			</condition>
@@ -351,7 +351,7 @@
 		<input>
 			<condition>
 				<equals>
-					<property>options/eng</property>
+					<property>/options/eng</property>
 					<value>CFM</value>
 				</equals>
 			</condition>
@@ -368,7 +368,7 @@
 		<input>
 			<condition>
 				<equals>
-					<property>options/eng</property>
+					<property>/options/eng</property>
 					<value>IAE</value>
 				</equals>
 			</condition>
@@ -392,7 +392,7 @@
 		<input>
 			<condition>
 				<equals>
-					<property>options/eng</property>
+					<property>/options/eng</property>
 					<value>CFM</value>
 				</equals>
 			</condition>