diff --git a/opm/core/wells/WellsManager.hpp b/opm/core/wells/WellsManager.hpp
index 41f567573..44112e72e 100644
--- a/opm/core/wells/WellsManager.hpp
+++ b/opm/core/wells/WellsManager.hpp
@@ -66,7 +66,7 @@ namespace Opm
         /// manage control switching does not exist.
         ///
         /// @param[in] W Existing wells object.
-        explicit WellsManager(struct Wells* W, bool checkCellExistence=true);
+        explicit WellsManager(struct Wells* W);
 
         /// Construct from input deck and grid.
         /// The permeability argument may be zero if the input contain