diff --git a/firmware/application/apps/ui_level.hpp b/firmware/application/apps/ui_level.hpp
index e23fbe69..b289ab9f 100644
--- a/firmware/application/apps/ui_level.hpp
+++ b/firmware/application/apps/ui_level.hpp
@@ -48,8 +48,6 @@ namespace ui {
 
 			void focus() override;
 
-			void big_display_freq( int64_t f );
-
 			const Style style_grey {		// level
 				.font = font::fixed_8x16,
 					.background = Color::black(),