diff --git a/src/lang.zig b/src/lang.zig
index d13ef2f..44566e5 100644
--- a/src/lang.zig
+++ b/src/lang.zig
@@ -415,7 +415,7 @@ pub const Lang = struct {
                     argument_value,
                 });
 
-                @field(cmd.params, cmd_field.name) = argument_value;
+                @field(cmd, cmd_field.name) = argument_value;
             }
         }