diff --git a/readme.txt b/readme.txt
index 4278a03..ed8783b 100644
--- a/readme.txt
+++ b/readme.txt
@@ -1,6 +1,7 @@
 # Cacodemon345's UEFI-DOOM (forked from warfish's DOOM repo)
 
 A port of DOOM to UEFI systems.
+Tested with: QEMU with OVMF.
 
 # Building
 Prerequisites:
@@ -52,4 +53,4 @@ Bugs:
 4. In-game input doesn't work?
 Planned:
 1. Audio support (using GoldFish64's AudioDxe driver).
-Help is accepted! Please let me know of any problems. Thanks.
\ No newline at end of file
+Help is accepted! Please let me know of any problems. Thanks.