diff --git a/kernel/modtools.h b/kernel/modtools.h
index 27ba98d7d..4be32a806 100644
--- a/kernel/modtools.h
+++ b/kernel/modtools.h
@@ -23,6 +23,7 @@
 #include "kernel/yosys.h"
 #include "kernel/sigtools.h"
 #include "kernel/celltypes.h"
+#include "kernel/newcelltypes.h"
 
 YOSYS_NAMESPACE_BEGIN
 
@@ -332,7 +333,7 @@ struct ModWalker
 	RTLIL::Design *design;
 	RTLIL::Module *module;
 
-	CellTypes ct;
+	NewCellTypes ct;
 	SigMap sigmap;
 
 	dict<RTLIL::SigBit, pool<PortBit>> signal_drivers;