diff --git a/src/delta_counter.sv b/src/delta_counter.sv
index 90b5cffa..415bd11c 100644
--- a/src/delta_counter.sv
+++ b/src/delta_counter.sv
@@ -28,7 +28,16 @@ module delta_counter #(
     logic [WIDTH:0] counter_q, counter_d;
     if (STICKY_OVERFLOW) begin : gen_sticky_overflow
         logic overflow_d, overflow_q;
-        always_ff @(posedge clk_i or negedge rst_ni) overflow_q <= ~rst_ni ? 1'b0 : overflow_d;
+
+        always_ff @(posedge clk_i or negedge rst_ni)
+        begin
+            if(rst_ni) begin
+                overflow_q <= 1'b0;
+            end else begin
+                overflow_q <= overflow_d;
+            end
+        end
+
         always_comb begin
             overflow_d = overflow_q;
             if (clear_i || load_i) begin