diff --git a/opm/core/utility/Units.hpp b/opm/core/utility/Units.hpp
index a2939783..3d4f4338 100644
--- a/opm/core/utility/Units.hpp
+++ b/opm/core/utility/Units.hpp
@@ -139,7 +139,7 @@ namespace Opm
         /// @{
         ///
         /// A porous medium with a permeability of 1 darcy permits a
-        /// flow (flux) of \f$1\,cm^2/s\f$ of a fluid with viscosity \f$1\,cP\f$ (
+        /// flow (flux) of \f$1\,cm^3/s\f$ of a fluid with viscosity \f$1\,cP\f$ (
         /// \f$1\,mPa\cdot s\f$) under a pressure gradient of \f$1\,atm/cm\f$ acting across
         /// an area of \f$1\,cm^2\f$.
         ///