diff --git a/libs/libpcf/src/base/repack_design_constraints.h b/libs/libpcf/src/base/repack_design_constraints.h
index 46a18071c..996503ec2 100644
--- a/libs/libpcf/src/base/repack_design_constraints.h
+++ b/libs/libpcf/src/base/repack_design_constraints.h
@@ -7,6 +7,7 @@
 #include <array>
 #include <map>
 #include <string>
+
 /* Headers from vtrutil library */
 #include "vtr_geometry.h"
 #include "vtr_vector.h"