diff --git a/installation.md b/installation.md
index d1d684a..a080c94 100644
--- a/installation.md
+++ b/installation.md
@@ -123,7 +123,7 @@ Other useful packages :
 
 Create a file that will be used for swap :
 ```
-# fallocate -l 1G /swapfile
+# fallocate -l 4G /swapfile
 ```
 
 Only the root user should be able to write and read the swap file.
diff --git a/tips-and-tricks.md b/tips-and-tricks.md
index 5fae434..95b1254 100644
--- a/tips-and-tricks.md
+++ b/tips-and-tricks.md
@@ -12,6 +12,13 @@ From Flathub :
 * VLC
 * VSCodium
 
+## QEMU guest agent for VMs
+
+```
+$ doas apk add qemu-guest-agent
+$ doas dinitctl enable qemu-ga
+```
+
 ## First-Time Git Setup
 
 ```