1 files changed, 1 insertions, 1 deletions
diff --git a/src/rtl/chacha.v b/src/rtl/chacha.v
index 360ff1a..435555b 100644
--- a/src/rtl/chacha.v
+++ b/src/rtl/chacha.v
@@ -170,7 +170,7 @@ module chacha(
   // All registers are positive edge triggered with asynchronous
   // active low reset. All registers have write enable.
   //----------------------------------------------------------------
-  always @ (posedge clk)
+  always @ (posedge clk or negedge reset_n)
     begin : reg_update
      integer i;
       if (!reset_n)