diff --git a/tests/checks/tmux-bind.fish b/tests/checks/tmux-bind.fish
index d15cb85d7..5e84df6d7 100644
--- a/tests/checks/tmux-bind.fish
+++ b/tests/checks/tmux-bind.fish
@@ -23,6 +23,9 @@ $tmux new-session -x 80 -y 10 -d $fish -C '
     # No autosuggestion from older history.
     set fish_history ""
 '
+# Set the correct permissions for the newly created socket to allow future connections.
+# This is required at least under WSL or else each invocation will return a permissions error.
+chmod 777 .tmux-socket
 $sleep # Let fish draw a prompt.
 
 # Test moving around with up-or-search on a multi-line commandline.
diff --git a/tests/checks/tmux-complete.fish b/tests/checks/tmux-complete.fish
index ab4c78d52..786864cc7 100644
--- a/tests/checks/tmux-complete.fish
+++ b/tests/checks/tmux-complete.fish
@@ -23,6 +23,9 @@ $tmux new-session -x 80 -y 10 -d $fish -C '
     # No autosuggestion from older history.
     set fish_history ""
 '
+# Set the correct permissions for the newly created socket to allow future connections.
+# This is required at least under WSL or else each invocation will return a permissions error.
+chmod 777 .tmux-socket
 $sleep # Let fish draw a prompt.
 
 # Don't escape existing token (#7526).
diff --git a/tests/checks/tmux-prompt.fish b/tests/checks/tmux-prompt.fish
index 71940a717..a32342df9 100644
--- a/tests/checks/tmux-prompt.fish
+++ b/tests/checks/tmux-prompt.fish
@@ -32,7 +32,9 @@ $tmux new-session -x 80 -y 10 -d $fish -C '
         commandline -f repaint
     end
 '
-
+# Set the correct permissions for the newly created socket to allow future connections.
+# This is required at least under WSL or else each invocation will return a permissions error.
+chmod 777 .tmux-socket
 $sleep # Let fish draw a prompt.
 
 $tmux capture-pane -p