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-rw-r--r--gr-blocks/lib/wavfile_source_impl.cc1
1 files changed, 1 insertions, 0 deletions
diff --git a/gr-blocks/lib/wavfile_source_impl.cc b/gr-blocks/lib/wavfile_source_impl.cc
index d013e20be9..e3bab12469 100644
--- a/gr-blocks/lib/wavfile_source_impl.cc
+++ b/gr-blocks/lib/wavfile_source_impl.cc
@@ -15,6 +15,7 @@
#include "wavfile_source_impl.h"
#include <gnuradio/io_signature.h>
#include <sys/types.h>
+#include <boost/format.hpp>
#include <stdexcept>
namespace gr {