diff --git a/htdocs/openwebrx.js b/htdocs/openwebrx.js
index 981294a..ec08db1 100644
--- a/htdocs/openwebrx.js
+++ b/htdocs/openwebrx.js
@@ -2101,9 +2101,10 @@ function mathbox_init()
 
 function mathbox_toggle()
 {
-	mathbox_container.style.display="block";
+
 	if(mathbox_mode == MATHBOX_MODES.UNINITIALIZED) mathbox_init();
 	mathbox_mode = (mathbox_mode == MATHBOX_MODES.NONE) ? MATHBOX_MODES.WATERFALL : MATHBOX_MODES.NONE;
+	mathbox_container.style.display = (mathbox_mode == MATHBOX_MODES.WATERFALL) ? "block" : "none";
 	mathbox_clear_data();
 	waterfall_clear();
 }