diff --git a/src/lagrangian/intermediate/submodels/Kinematic/InjectionModel/EntrainmentInjection/EntrainmentInjection.H b/src/lagrangian/intermediate/submodels/Kinematic/InjectionModel/EntrainmentInjection/EntrainmentInjection.H
index 845a0d58bc3a5cddf78473992fbb85d0b22908f8..9a82c46aaa17b8651502c7da435db31bd9bea147 100755
--- a/src/lagrangian/intermediate/submodels/Kinematic/InjectionModel/EntrainmentInjection/EntrainmentInjection.H
+++ b/src/lagrangian/intermediate/submodels/Kinematic/InjectionModel/EntrainmentInjection/EntrainmentInjection.H
@@ -26,6 +26,16 @@ Class
     Foam::EntrainmentInjection
 
 Description
+    Injection at specified positions, with the condition that for injection
+    to be allowed
+
+        rhol <= c_*0.5*rhoc*|Uc|^2
+
+    where:
+      - rhol is the effective density (of all clouds)
+      - c_ is a modelling constant [s2/m2]
+      - rhoc is the carrier phase density
+      - Uc is the carrier phase velocity
 
 SourceFiles
     EntrainmentInjection.C
@@ -57,7 +67,7 @@ class EntrainmentInjection
 
         // Model parameters
 
-            //- Injection permission: rhol <= c_*0.5*rho*|U|^2
+            //- Modelling constant
             const scalar c_;
 
             //- Carrier phase density field
diff --git a/src/lagrangian/intermediate/submodels/Kinematic/InjectionModel/ManualInjection/ManualInjection.H b/src/lagrangian/intermediate/submodels/Kinematic/InjectionModel/ManualInjection/ManualInjection.H
index 6dde70c7464e10fba596e0f111de73c55059a262..a9b4ae0f5c241a979f78271c2776279a32b957f4 100644
--- a/src/lagrangian/intermediate/submodels/Kinematic/InjectionModel/ManualInjection/ManualInjection.H
+++ b/src/lagrangian/intermediate/submodels/Kinematic/InjectionModel/ManualInjection/ManualInjection.H
@@ -154,7 +154,7 @@ public:
             scalar d0
             (
                 const label parcelI,
-                const scalar
+                const scalar time
             ) const;
 
             //- Return flag to identify whether or not injection in cellI is