1 files changed, 1 insertions, 0 deletions

diff --git a/src/solvers/solvers.h b/src/solvers/solvers.h
index 78180aa..fab6e27 100644
--- a/src/solvers/solvers.h
+++ b/src/solvers/solvers.h
@@ -7,6 +7,7 @@
 #include "tables.h"
 #include "distribution.h"
 #include "coord/coord.h"
+#include "twostep/twostep.h"
 #include "h48/h48.h"
 #include "dispatch.h"