diff --git a/src/regionModels/surfaceFilmModels/kinematicSingleLayer/kinematicSingleLayer.C b/src/regionModels/surfaceFilmModels/kinematicSingleLayer/kinematicSingleLayer.C
index 461fbd10ae..a448083f99 100644
--- a/src/regionModels/surfaceFilmModels/kinematicSingleLayer/kinematicSingleLayer.C
+++ b/src/regionModels/surfaceFilmModels/kinematicSingleLayer/kinematicSingleLayer.C
@@ -827,7 +827,7 @@ void kinematicSingleLayer::preEvolveRegion()
 //    availableMass_ = mass();
     availableMass_ = netMass();
     cloudMassTrans_ == dimensionedScalar("zero", dimMass, 0.0);
-    cloudDiameterTrans_ == dimensionedScalar("zero", dimLength, -1.0);
+    cloudDiameterTrans_ == dimensionedScalar("zero", dimLength, 0.0);
 }
 
 
diff --git a/src/regionModels/surfaceFilmModels/submodels/kinematic/injectionModel/drippingInjection/drippingInjection.C b/src/regionModels/surfaceFilmModels/submodels/kinematic/injectionModel/drippingInjection/drippingInjection.C
index 076e6abb23..e271674b10 100644
--- a/src/regionModels/surfaceFilmModels/submodels/kinematic/injectionModel/drippingInjection/drippingInjection.C
+++ b/src/regionModels/surfaceFilmModels/submodels/kinematic/injectionModel/drippingInjection/drippingInjection.C
@@ -139,7 +139,7 @@ void drippingInjection::correct
         {
             // Mass below minimum threshold - cannot be injected
             massToInject[cellI] = 0.0;
-            diameterToInject[cellI] = -1.0;
+            diameterToInject[cellI] = 0.0;
         }
     }
 }