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-rw-r--r--gr-qtgui/src/lib/Waterfall3DDisplayPlot.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/gr-qtgui/src/lib/Waterfall3DDisplayPlot.h b/gr-qtgui/src/lib/Waterfall3DDisplayPlot.h
index 8af5f6b54e..f46f260e37 100644
--- a/gr-qtgui/src/lib/Waterfall3DDisplayPlot.h
+++ b/gr-qtgui/src/lib/Waterfall3DDisplayPlot.h
@@ -1,6 +1,7 @@
#ifndef WATERFALL_3D_DISPLAY_PLOT_HPP
#define WATERFALL_3D_DISPLAY_PLOT_HPP
+#include <cstdio>
#include <highResTimeFunctions.h>
#include <waterfallGlobalData.h>