diff --git a/applications/lofar2/libraries/sdp/src/vhdl/sdp_beamformer_output.vhd b/applications/lofar2/libraries/sdp/src/vhdl/sdp_beamformer_output.vhd
index 9b1a265d65e5a1bd44b9afd0db077a6a355ec5bd..de8c07ed0fbdd9d3704df5e35c01be6d0c81c17b 100644
--- a/applications/lofar2/libraries/sdp/src/vhdl/sdp_beamformer_output.vhd
+++ b/applications/lofar2/libraries/sdp/src/vhdl/sdp_beamformer_output.vhd
@@ -80,7 +80,7 @@ ARCHITECTURE str OF sdp_beamformer_output IS
 
   -- c_fifo_fill must be the exact size of a packet such that no packet gets stuck in the FIFO or the FIFO gets read out too soon.
   -- For packets of variable length, dp_fifo_fill_eop must be used. In this case we can use the standard fill fifo.
-  CONSTANT c_fifo_fill              : NATURAL := c_sdp_cep_nof_blocks_per_packet * c_sdp_cep_nof_beamlets_per_block / 4; -- Size of packet: 4 beamlets fit in 1 64bit longword 
+  CONSTANT c_fifo_fill              : NATURAL := c_sdp_cep_nof_blocks_per_packet * c_sdp_cep_nof_beamlets_per_block / 2; -- Size of packet: 2 beamlets (dual pol) fit in 1 64bit longword 
   CONSTANT c_fifo_size              : NATURAL := c_fifo_fill*2; -- Make fifo size large enough for adding header and muxing beamsets.
  
   SIGNAL snk_in_concat           : t_dp_sosi;
diff --git a/applications/lofar2/libraries/sdp/src/vhdl/sdp_pkg.vhd b/applications/lofar2/libraries/sdp/src/vhdl/sdp_pkg.vhd
index dfdb732de1ba6f91a47525f6e54f6097e10648aa..d2c22cf35a50efafc6c446d3728981136e262b0e 100644
--- a/applications/lofar2/libraries/sdp/src/vhdl/sdp_pkg.vhd
+++ b/applications/lofar2/libraries/sdp/src/vhdl/sdp_pkg.vhd
@@ -219,7 +219,7 @@ PACKAGE sdp_pkg is
   CONSTANT c_sdp_cep_udp_src_port_15_8 : STD_LOGIC_VECTOR(7 DOWNTO 0)  := x"D0";        -- 15:8, 7:0 = gn_id (= ID[7:0] = backplane[5:0] & node[1:0])
 
   CONSTANT c_sdp_cep_nof_blocks_per_packet  : NATURAL := 4;
-  CONSTANT c_sdp_cep_nof_beamlets_per_block : NATURAL := c_sdp_N_pol_bf * c_sdp_S_sub_bf;   -- FIXME in L2SDP-471
+  CONSTANT c_sdp_cep_nof_beamlets_per_block : NATURAL := c_sdp_S_sub_bf;   
   CONSTANT c_sdp_cep_nof_hdr_fields : NATURAL := 3+12+4+18+1; -- 592b; 9.25 64b words
   CONSTANT c_sdp_cep_hdr_field_sel  : STD_LOGIC_VECTOR(c_sdp_cep_nof_hdr_fields-1 DOWNTO 0) := "101"&"111111111001"&"0111"&"1100"&"00000010"&"000110"&"0";  -- 0=data path, 1=MM controlled TODO
 --CONSTANT c_sdp_cep_hdr_field_sel  : STD_LOGIC_VECTOR(c_sdp_cep_nof_hdr_fields-1 DOWNTO 0) := "100"&"000000010001"&"0100"&"0100"&"00000000"&"101000"&"0";  -- 0=data path, 1=MM controlled TODO