diff --git a/CMakeLists_files.cmake b/CMakeLists_files.cmake
index 98976b730..0130f01ed 100644
--- a/CMakeLists_files.cmake
+++ b/CMakeLists_files.cmake
@@ -202,7 +202,6 @@ list (APPEND PUBLIC_HEADER_FILES
   opm/core/props/satfunc/RelpermDiagnostics.hpp
   opm/simulators/timestepping/SimulatorReport.hpp
   opm/simulators/wells/WellContainer.hpp
-  opm/simulators/wells/WellState.hpp
   opm/simulators/aquifers/AquiferInterface.hpp
   opm/simulators/aquifers/AquiferCarterTracy.hpp
   opm/simulators/aquifers/AquiferFetkovich.hpp