diff --git a/flash b/flash
index e939a37..6c2f5f3 100755
--- a/flash
+++ b/flash
@@ -482,8 +482,13 @@ case "${OSTYPE}" in
     ;;
 esac
 
+if endswith microsoft-standard "$(uname -r)"; then
+  echo This script does not work in WSL2.
+  exit 11
+fi
+
 if endswith Microsoft "$(uname -r)"; then
-  echo This script does not work in WSL.
+  echo This script does not work in WSL1.
   exit 11
 fi