diff --git a/Systems/cfm56-sound.xml b/Systems/cfm56-sound.xml
index f6104c11..63f0d30b 100644
--- a/Systems/cfm56-sound.xml
+++ b/Systems/cfm56-sound.xml
@@ -3505,7 +3505,7 @@
/engines/engine[0]/n1-actual0.01
- 0.58 1.00
+ 0.32 0.80
0.82 1.50
@@ -3533,7 +3533,7 @@
/engines/engine[1]/n1-actual0.01
- 0.58 1.00
+ 0.32 0.80
0.82 1.50