diff --git a/docs/DellLatitude7490.txt b/docs/DellLatitude7490.txt
index 4a85492..30e3714 100644
--- a/docs/DellLatitude7490.txt
+++ b/docs/DellLatitude7490.txt
@@ -23,7 +23,7 @@ have been:
   - Using newer kernel from Debian Backports: FAILED
   - Using Fedora instead of Debian: FAILED
   - Adding i915.modeset=0 to the boot line: FAILED
-  - Adding acpi_osi='Windows 2019' to the boot line: TESTING
+  - Adding acpi_osi='Windows 2018' to the boot line: TESTING
 
-Currently the "acpi_osi='Windows 2019'" kernel option seems to be
+Currently the "acpi_osi='Windows 2018'" kernel option seems to be
 working.