diff --git a/terminal_js.go b/terminal_js.go
index 0d1092c..f229698 100644
--- a/terminal_js.go
+++ b/terminal_js.go
@@ -3,4 +3,6 @@ package log
 
 // WASM builds don't have a terminal to query so interactive=false for plain
 // text logs to the browser console.
-var interactive = false
+func init() {
+	interactive = false
+}