diff --git a/build/cmake/kinsol.cmake b/build/cmake/kinsol.cmake
index c3e9ffbb9c4f69233f4fe64c6be6b481f8c3282a..16f8893610be77e6506b3286f6ad612ef5408137 100644
--- a/build/cmake/kinsol.cmake
+++ b/build/cmake/kinsol.cmake
@@ -113,7 +113,6 @@ function(compile_with_kinsol PARENT_DIR, DIR_SUNDIALS)
         ${SUMMA_ENGINE_DIR}/computResid.f90
         ${SUMMA_ENGINE_DIR}/computJacob.f90
         ${SUMMA_ENGINE_DIR}/eval8summa.f90
-        ${SUMMA_ENGINE_DIR}/summaSolve.f90
         ${SUMMA_ENGINE_DIR}/systemSolv.f90
         ${SUMMA_ENGINE_DIR}/varSubstep.f90
         ${SUMMA_ENGINE_DIR}/opSplittin.f90
diff --git a/build/summa_original b/build/summa_original
new file mode 160000
index 0000000000000000000000000000000000000000..fa9adf808229a45085defdc2bb8ef05836b9b3aa
--- /dev/null
+++ b/build/summa_original
@@ -0,0 +1 @@
+Subproject commit fa9adf808229a45085defdc2bb8ef05836b9b3aa