diff --git a/tests/checks/tmux-complete.fish b/tests/checks/tmux-complete.fish
index 0e3365968..8b8076109 100644
--- a/tests/checks/tmux-complete.fish
+++ b/tests/checks/tmux-complete.fish
@@ -1,5 +1,6 @@
 #RUN: %fish %s
 #REQUIRES: command -v tmux
+#REQUIRES: uname -r | grep -qv Microsoft
 
 isolated-tmux-start