diff --git a/Nasal/FMGC.nas b/Nasal/FMGC.nas
index df21e817..5e15e602 100644
--- a/Nasal/FMGC.nas
+++ b/Nasal/FMGC.nas
@@ -454,6 +454,14 @@ var ManagedSPD = maketimer(0.25, func {
 			mng_alt_mach_cmd = getprop("/FMGC/internal/mng-alt-mach");
 			mng_alt_mach = math.round(mng_alt_mach_cmd, 0.001);
 			
+			if (mach > mng_alt_mach and (phase == 2 or phase == 3)) {
+				setprop("/FMGC/internal/mach-switchover", 1);
+			}
+			
+			if (ias > mng_alt_spd and (phase == 4 or phase == 5)) {
+				setprop("/FMGC/internal/mach-switchover", 0);
+			}
+			
 			if ((mode == " " or mode == "SRS") and (phase == 0 or phase == 1)) {
 				if (mngktsmach) {
 					setprop("/FMGC/internal/mng-kts-mach", 0);
diff --git a/Systems/fmgc-b.xml b/Systems/fmgc-b.xml
index 51c7b9df..87482617 100644
--- a/Systems/fmgc-b.xml
+++ b/Systems/fmgc-b.xml
@@ -159,7 +159,7 @@
 					<table>
 						<property>/FMGC/internal/cost-index</property>
 						<entry><ind>  0</ind><dep>1.00</dep></entry>
-						<entry><ind>120</ind><dep>1.14</dep></entry>
+						<entry><ind>120</ind><dep>1.19</dep></entry>
 					</table>
 				</product>
 			</expression>