diff --git a/src/sink_iact.h b/src/sink_iact.h
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+/*******************************************************************************
+ * This file is part of SWIFT.
+ * Copyright (c) 2020 Loic Hausammann (loic.hausammann@epfl.ch)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ ******************************************************************************/
+#ifndef SWIFT_SINK_IACT_H
+#define SWIFT_SINK_IACT_H
+
+/* Config parameters. */
+#include <config.h>
+
+/* Select the correct sink model */
+#if defined(SINK_NONE)
+#include "./sink/Default/sink_iact.h"
+#elif defined(SINK_GEAR)
+#include "./sink/GEAR/sink_iact.h"
+#else
+#error "Invalid choice of sink model"
+#endif
+
+#endif /* SWIFT_SINK_IACT_H */