diff --git a/src/algorithms/signal_source/gnuradio_blocks/fifo_reader.h b/src/algorithms/signal_source/gnuradio_blocks/fifo_reader.h
index 276970191..116592aec 100644
--- a/src/algorithms/signal_source/gnuradio_blocks/fifo_reader.h
+++ b/src/algorithms/signal_source/gnuradio_blocks/fifo_reader.h
@@ -20,6 +20,7 @@
 
 #include "gnss_block_interface.h"
 #include <gnuradio/sync_block.h>
+#include <array>
 #include <fstream>  // std::ifstream
 #include <string>