diff --git a/src/input/Binding.zig b/src/input/Binding.zig
index 64016659a..1615cf035 100644
--- a/src/input/Binding.zig
+++ b/src/input/Binding.zig
@@ -312,7 +312,8 @@ pub const Action = union(enum) {
     /// Focus on a split in a given direction.
     goto_split: SplitFocusDirection,
 
-    /// zoom/unzoom the current split.
+    /// zoom/unzoom the current split. This is currently only supported
+    /// on macOS. Contributions welcome for other platforms.
     toggle_split_zoom: void,
 
     /// Resize the current split by moving the split divider in the given