add default nettype none
diff --git a/verilog/rtl/caravel_clocking.v b/verilog/rtl/caravel_clocking.v
index 1b1555f..aa49d6f 100644
--- a/verilog/rtl/caravel_clocking.v
+++ b/verilog/rtl/caravel_clocking.v
@@ -1,3 +1,4 @@
+`default_nettype none
 // This routine synchronizes the 
 
 module caravel_clocking(