diff --git a/doc/CPU.md b/doc/CPU.md
index ba662d2c7..82c0a752c 100644
--- a/doc/CPU.md
+++ b/doc/CPU.md
@@ -1,6 +1,6 @@
 # CPU backend
 
-All CPU related settings contains in one `cpu` object in config file, CPU backend allow specify multiple profiles and allow switch between them without restrictions. Default auto-configuration create reasonable minimum of profiles which cover all supported algorithms.
+All CPU related settings contains in one `cpu` object in config file, CPU backend allow specify multiple profiles and allow switch between them without restrictions by pool request or config change. Default auto-configuration create reasonable minimum of profiles which cover all supported algorithms.
 
 ### Example