diff --git a/applications/lofar2/designs/lofar2_unb2b_adc/src/vhdl/node_adc_input_and_timing.vhd b/applications/lofar2/designs/lofar2_unb2b_adc/src/vhdl/node_adc_input_and_timing.vhd
index 96e3c42900bd80357dc8c4f7ef22ca834fa67a6e..77501b43b2fd78bdc0690189682e352ae11ff8c6 100644
--- a/applications/lofar2/designs/lofar2_unb2b_adc/src/vhdl/node_adc_input_and_timing.vhd
+++ b/applications/lofar2/designs/lofar2_unb2b_adc/src/vhdl/node_adc_input_and_timing.vhd
@@ -86,9 +86,9 @@ ENTITY node_adc_input_and_timing IS
     reg_bsn_monitor_input_miso     : OUT t_mem_miso;
 
     -- Data buffer for raw samples
-    ram_diag_data_buf_jesd_mosi    : IN  t_mem_mosi;
+    ram_diag_data_buf_jesd_mosi    : IN  t_mem_mosi := c_mem_mosi_rst;
     ram_diag_data_buf_jesd_miso    : OUT t_mem_miso;
-    reg_diag_data_buf_jesd_mosi    : IN  t_mem_mosi;
+    reg_diag_data_buf_jesd_mosi    : IN  t_mem_mosi := c_mem_mosi_rst;
     reg_diag_data_buf_jesd_miso    : OUT t_mem_miso;
 
     -- Data buffer for framed samples (variable depth)