diff --git a/tools/gen_reg_class.py b/tools/gen_reg_class.py
index bdfd757e..980708b6 100644
--- a/tools/gen_reg_class.py
+++ b/tools/gen_reg_class.py
@@ -28,6 +28,6 @@ for reg in data:
             if msb == lsb:
                 print(f"    {fname} = {lsb}")
             else:
-                print(f"    {fname} {msb}, {lsb}")
+                print(f"    {fname} = {msb}, {lsb}")
 
     print()