diff --git a/applications/lofar2/libraries/sdp/src/vhdl/node_sdp_beamformer.vhd b/applications/lofar2/libraries/sdp/src/vhdl/node_sdp_beamformer.vhd
index e834c03983eb2cbc2b6423e0fcb9f320cddadbe0..669db80faa9353c541db95f3353a7cd6aed30cc3 100644
--- a/applications/lofar2/libraries/sdp/src/vhdl/node_sdp_beamformer.vhd
+++ b/applications/lofar2/libraries/sdp/src/vhdl/node_sdp_beamformer.vhd
@@ -29,12 +29,13 @@
 -- .
 -------------------------------------------------------------------------------
 
-LIBRARY IEEE, common_lib, dp_lib, reorder_lib, st_lib, mm_lib;
+LIBRARY IEEE, common_lib, dp_lib, reorder_lib, st_lib, mm_lib, ring_lib;
 USE IEEE.STD_LOGIC_1164.ALL;
 USE common_lib.common_pkg.ALL;
 USE common_lib.common_mem_pkg.ALL;
 USE common_lib.common_network_layers_pkg.ALL;
 USE dp_lib.dp_stream_pkg.ALL;
+USE ring_lib.ring_pkg.ALL;
 USE work.sdp_pkg.ALL;
 
 ENTITY node_sdp_beamformer IS