diff --git a/hw/ip/otbn/rtl/otbn_core.sv b/hw/ip/otbn/rtl/otbn_core.sv
index 99062a8..b1b6b30 100644
--- a/hw/ip/otbn/rtl/otbn_core.sv
+++ b/hw/ip/otbn/rtl/otbn_core.sv
@@ -206,7 +206,7 @@
   logic            rnd_fips_err;
 
   logic            urnd_reseed_req;
-  logic            urnd_reseed_busy;
+  logic            urnd_reseed_ack;
   logic            urnd_advance;
   logic            urnd_advance_start_stop_control;
   logic [WLEN-1:0] urnd_data;
@@ -262,7 +262,7 @@
     .controller_start_o(controller_start),
 
     .urnd_reseed_req_o (urnd_reseed_req),
-    .urnd_reseed_busy_i(urnd_reseed_busy),
+    .urnd_reseed_ack_i (urnd_reseed_ack),
     .urnd_advance_o    (urnd_advance_start_stop_control),
 
     .start_secure_wipe_i  (start_secure_wipe),
@@ -795,7 +795,7 @@
     .rnd_fips_err_o    (rnd_fips_err),
 
     .urnd_reseed_req_i (urnd_reseed_req),
-    .urnd_reseed_busy_o(urnd_reseed_busy),
+    .urnd_reseed_ack_o (urnd_reseed_ack),
     .urnd_advance_i    (urnd_advance),
     .urnd_data_o       (urnd_data),
     .urnd_all_zero_o   (urnd_all_zero),
diff --git a/hw/ip/otbn/rtl/otbn_rnd.sv b/hw/ip/otbn/rtl/otbn_rnd.sv
index e85e87f..61071ce 100644
--- a/hw/ip/otbn/rtl/otbn_rnd.sv
+++ b/hw/ip/otbn/rtl/otbn_rnd.sv
@@ -38,8 +38,8 @@
 
   // Request URND PRNG reseed from the EDN
   input  logic            urnd_reseed_req_i,
-  // Remains asserted whilst reseed is in progress
-  output logic            urnd_reseed_busy_o,
+  // Acknowledge URND PRNG reseed from the EDN
+  output logic            urnd_reseed_ack_o,
   // When asserted PRNG state advances. It is permissible to advance the state whilst
   // reseeding.
   input  logic            urnd_advance_i,
@@ -165,10 +165,13 @@
   logic edn_urnd_req_q, edn_urnd_req_d;
 
   assign edn_urnd_req_complete = edn_urnd_req_o & edn_urnd_ack_i;
+
+  // Keep EDN URND request high even if input URND reseed request goes low before the reseed has
+  // completed.
   assign edn_urnd_req_d = (edn_urnd_req_q | urnd_reseed_req_i) & ~edn_urnd_req_complete;
 
   assign edn_urnd_req_o = edn_urnd_req_q;
-  assign urnd_reseed_busy_o = edn_urnd_req_q;
+  assign urnd_reseed_ack_o = edn_urnd_ack_i;
 
   always_ff @(posedge clk_i or negedge rst_ni) begin
     if (!rst_ni) begin
diff --git a/hw/ip/otbn/rtl/otbn_start_stop_control.sv b/hw/ip/otbn/rtl/otbn_start_stop_control.sv
index 0e3a23d..1757a50 100644
--- a/hw/ip/otbn/rtl/otbn_start_stop_control.sv
+++ b/hw/ip/otbn/rtl/otbn_start_stop_control.sv
@@ -38,7 +38,7 @@
   output logic controller_start_o,
 
   output logic urnd_reseed_req_o,
-  input  logic urnd_reseed_busy_i,
+  input  logic urnd_reseed_ack_i,
   output logic urnd_advance_o,
 
   input   logic start_secure_wipe_i,
@@ -118,9 +118,10 @@
         end
       end
       OtbnStartStopStateUrndRefresh: begin
+        urnd_reseed_req_o = 1'b1;
         if (stop) begin
           state_d = OtbnStartStopStateLocked;
-        end else if (!urnd_reseed_busy_i) begin
+        end else if (urnd_reseed_ack_i) begin
           state_d     = OtbnStartStopStateRunning;
         end
       end
@@ -194,7 +195,7 @@
   end
 
   // Logic separate from main FSM code to avoid false combinational loop warning from verilator
-  assign controller_start_o = (state_q == OtbnStartStopStateUrndRefresh) & !urnd_reseed_busy_i;
+  assign controller_start_o = (state_q == OtbnStartStopStateUrndRefresh) & urnd_reseed_ack_i;
 
   assign done_o = ((state_q == OtbnStartStopSecureWipeComplete) ||
                    (stop && (state_q == OtbnStartStopStateUrndRefresh)));