diff --git a/kernel/celltypes.h b/kernel/celltypes.h
index 9f775cde7..5218b5363 100644
--- a/kernel/celltypes.h
+++ b/kernel/celltypes.h
@@ -20,7 +20,7 @@
 #ifndef CELLTYPES_H
 #define CELLTYPES_H
 
-#include <kernel/yosys.h>
+#include "kernel/yosys.h"
 
 YOSYS_NAMESPACE_BEGIN
 
diff --git a/kernel/cost.h b/kernel/cost.h
index 84fd6cd6d..e795b571b 100644
--- a/kernel/cost.h
+++ b/kernel/cost.h
@@ -20,7 +20,7 @@
 #ifndef COST_H
 #define COST_H
 
-#include <kernel/yosys.h>
+#include "kernel/yosys.h"
 
 YOSYS_NAMESPACE_BEGIN