diff --git a/Models/FlightDeck/a320.flightdeck.xml b/Models/FlightDeck/a320.flightdeck.xml
index 8c6e760d..a9ac60b1 100644
--- a/Models/FlightDeck/a320.flightdeck.xml
+++ b/Models/FlightDeck/a320.flightdeck.xml
@@ -4056,7 +4056,7 @@
 			<binding>
 				<command>nasal</command>
 				<script>if (getprop("/it-autoflight/output/ap1") == 0) {
-							libraries.apOff("hard","L");
+							libraries.apOff("hard",1);
 						}
 				</script>
 			</binding>
@@ -4096,7 +4096,7 @@
 			<binding>
 				<command>nasal</command>
 				<script>if (getprop("/it-autoflight/output/ap1") == 0) {
-							libraries.apOff("hard","R");
+							libraries.apOff("hard",2);
 						}
 				</script>
 			</binding>
diff --git a/Nasal/FMGC-b.nas b/Nasal/FMGC-b.nas
index 2e979d66..0d62ff0e 100644
--- a/Nasal/FMGC-b.nas
+++ b/Nasal/FMGC-b.nas
@@ -640,7 +640,7 @@ var ap_various = func {
 		if (getprop("/controls/flight/aileron") > 0.2 or getprop("/controls/flight/aileron") < -0.2 or getprop("/controls/flight/elevator") > 0.2 or getprop("/controls/flight/elevator") < -0.2) {
 			setprop("/it-autoflight/input/ap1", 0);
 			setprop("/it-autoflight/input/ap2", 0);
-			libraries.apOff("hard", "B");
+			libraries.apOff("hard", 0);
 		}
 	}
 }
diff --git a/Nasal/buttons.nas b/Nasal/buttons.nas
index 8519095e..04e91c49 100644
--- a/Nasal/buttons.nas
+++ b/Nasal/buttons.nas
@@ -253,7 +253,7 @@ var decreaseManVS = func {
 }
 
 var apOff = func(type, side) {
-	if ((side == "L" and getprop("/it-autoflight/output/ap1") == 1) or (side == "R" and getprop("/it-autoflight/output/ap2") == 1)) {
+	if ((side == 1 and getprop("/it-autoflight/output/ap1") == 1) or (side == 2 and getprop("/it-autoflight/output/ap2") == 1)) {
 		setprop("/it-autoflight/output/ap-warning", 0);
 		return;
 	}
diff --git a/Nasal/it-fbw.nas b/Nasal/it-fbw.nas
index 692ac6b3..14562b76 100644
--- a/Nasal/it-fbw.nas
+++ b/Nasal/it-fbw.nas
@@ -216,7 +216,7 @@ var update_loop = func {
 		if (getprop("/it-autoflight/output/ap2") == 1) {
 			setprop("/it-autoflight/input/ap2", 0);
 		}
-		libraries.apOff("hard", "B");
+		libraries.apOff("hard", 0);
 	} else {
 		if (getprop("/it-fbw/protections/overspeed") != 0) {
 			setprop("/it-fbw/protections/overspeed", 0);
diff --git a/Systems/autopilot-dlg.xml b/Systems/autopilot-dlg.xml
index 6edb9080..52d927f9 100644
--- a/Systems/autopilot-dlg.xml
+++ b/Systems/autopilot-dlg.xml
@@ -58,7 +58,7 @@
 			</binding>
 			<binding>
 			<command>nasal</command>
-			<script>libraries.apOff("hard","L");</script>
+			<script>libraries.apOff("hard",1);</script>
 			</binding>
 		</button>
 		<button>
@@ -70,7 +70,7 @@
 			</binding>
 			<binding>
 			<command>nasal</command>
-			<script>libraries.apOff("hard","R");</script>
+			<script>libraries.apOff("hard",2);</script>
 			</binding>
 		</button>
 		<button>