diff --git a/src/cell_rt.h b/src/cell_rt.h
index 7ccd7795381d96d07bed7c69e0531efbdbba6c87..049c74d5c731442a951ff1da5baffaf53fb0c20a 100644
--- a/src/cell_rt.h
+++ b/src/cell_rt.h
@@ -20,7 +20,7 @@
 #define SWIFT_CELL_RT_H
 
 /* Config parameters. */
-#include "../config.h"
+#include <config.h>
 
 /* Local includes. */
 #include "timeline.h"