diff --git a/src/rate.cc b/src/rate.cc
index eaa69fb17645a8e48262867289fe138a375e9362..4d60bd9da4471b087a3a834808131169ffd6804f 100644
--- a/src/rate.cc
+++ b/src/rate.cc
@@ -3,8 +3,8 @@
 #endif
 
 #include "rate.hh"
-#include "rate/newmark.cc"
-#include "rate/backward_euler.cc"
+#include "rate/backward_euler.hh"
+#include "rate/newmark.hh"
 
 template <class Vector, class Matrix, class Function, int dimension>
 std::shared_ptr<RateUpdater<Vector, Matrix, Function, dimension>>