diff --git a/sdrgui/resources/waterfall.png b/sdrgui/resources/waterfall.png index 4f6d44416..148bf1600 100644 Binary files a/sdrgui/resources/waterfall.png and b/sdrgui/resources/waterfall.png differ diff --git a/sdrgui/resources/waterfall_3d.png b/sdrgui/resources/waterfall_3d.png index badd0595d..2a948a1be 100644 Binary files a/sdrgui/resources/waterfall_3d.png and b/sdrgui/resources/waterfall_3d.png differ