diff --git a/src/algorithms/signal_source/gnuradio_blocks/gr_complex_ip_packet_source.cc b/src/algorithms/signal_source/gnuradio_blocks/gr_complex_ip_packet_source.cc
index a5e878813..0269dfd33 100644
--- a/src/algorithms/signal_source/gnuradio_blocks/gr_complex_ip_packet_source.cc
+++ b/src/algorithms/signal_source/gnuradio_blocks/gr_complex_ip_packet_source.cc
@@ -27,7 +27,7 @@
 #include <boost/bind/bind.hpp>
 #endif
 
-const int FIFO_SIZE = 1'472'000;
+const int FIFO_SIZE = 1472000;
 
 
 /* 4 bytes IP address */