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-rw-r--r--gr-qtgui/lib/SpectrumGUIClass.cc1
1 files changed, 1 insertions, 0 deletions
diff --git a/gr-qtgui/lib/SpectrumGUIClass.cc b/gr-qtgui/lib/SpectrumGUIClass.cc
index 0cbb6f5f51..a55c89369e 100644
--- a/gr-qtgui/lib/SpectrumGUIClass.cc
+++ b/gr-qtgui/lib/SpectrumGUIClass.cc
@@ -24,6 +24,7 @@
#define SPECTRUM_GUI_CLASS_CPP
#include <gnuradio/qtgui/SpectrumGUIClass.h>
+
//Added by qt3to4:
#include <QEvent>
#include <volk/volk.h>