diff --git a/Source/type.f90 b/Source/type.f90
index 767a627658..89f38eb5d4 100644
--- a/Source/type.f90
+++ b/Source/type.f90
@@ -89,7 +89,7 @@ MODULE TYPES
    REAL(EB) :: INITIAL_MASS=-1._EB        !< Initial mass of single particle (kg)
    REAL(EB) :: FTPR                       !< 4/3 * PI * SPECIES(N)\%DENSITY_LIQUID (kg/m3)
    REAL(EB) :: FREE_AREA_FRACTION         !< Area fraction of cell open for flow in SCREEN_DRAG model
-   REAL(EB) :: POROUS_VOLUME_FRACTION     !< Volume fraction of cell open to flow in porous media model
+   REAL(EB) :: POROUS_VOLUME_FRACTION     !< Volume fraction of cell occupied by porous media in the porous media model
    REAL(EB) :: MEAN_DROPLET_VOLUME=0._EB  !< Mean droplet volume
    REAL(EB) :: RUNNING_AVERAGE_FACTOR     !< Fraction of older value to use for particle statistics summations
    REAL(EB) :: SHAPE_FACTOR               !< Ratio of particle cross sectional area to surface area