diff --git a/src/lagrangian/intermediate/parcels/Templates/ReactingMultiphaseParcel/ReactingMultiphaseParcel.C b/src/lagrangian/intermediate/parcels/Templates/ReactingMultiphaseParcel/ReactingMultiphaseParcel.C
index 9b4beff0ee..cbe7b18c98 100644
--- a/src/lagrangian/intermediate/parcels/Templates/ReactingMultiphaseParcel/ReactingMultiphaseParcel.C
+++ b/src/lagrangian/intermediate/parcels/Templates/ReactingMultiphaseParcel/ReactingMultiphaseParcel.C
@@ -347,7 +347,7 @@ void Foam::ReactingMultiphaseParcel<ParcelType>::calc
 
         if (td.cloud().solution().coupled())
         {
-            scalar dm = np0*mass1;
+            scalar dm = np0*mass0;
 
             // Absorb parcel into carrier phase
             forAll(YGas_, i)
diff --git a/src/lagrangian/intermediate/parcels/Templates/ReactingParcel/ReactingParcel.C b/src/lagrangian/intermediate/parcels/Templates/ReactingParcel/ReactingParcel.C
index 9d9a4cdbe8..553fb7ebfd 100644
--- a/src/lagrangian/intermediate/parcels/Templates/ReactingParcel/ReactingParcel.C
+++ b/src/lagrangian/intermediate/parcels/Templates/ReactingParcel/ReactingParcel.C
@@ -516,7 +516,7 @@ void Foam::ReactingParcel<ParcelType>::calc
 
         if (td.cloud().solution().coupled())
         {
-            scalar dm = np0*mass1;
+            scalar dm = np0*mass0;
 
             // Absorb parcel into carrier phase
             forAll(Y_, i)