diff --git a/src/lagrangian/intermediate/submodels/Kinematic/PatchInteractionModel/LocalInteraction/patchInteractionData.C b/src/lagrangian/intermediate/submodels/Kinematic/PatchInteractionModel/LocalInteraction/patchInteractionData.C
index 2f6d4f3f21d775aaa5984809941b835df6dee2fd..1b54ba2c3cd9140706651f683acb16755f4b2294 100644
--- a/src/lagrangian/intermediate/submodels/Kinematic/PatchInteractionModel/LocalInteraction/patchInteractionData.C
+++ b/src/lagrangian/intermediate/submodels/Kinematic/PatchInteractionModel/LocalInteraction/patchInteractionData.C
@@ -46,7 +46,7 @@ const Foam::word& Foam::patchInteractionData::interactionTypeName() const
 }
 
 
-const Foam::word& Foam::patchInteractionData::patchName() const
+const Foam::keyType& Foam::patchInteractionData::patchName() const
 {
     return patchName_;
 }
diff --git a/src/lagrangian/intermediate/submodels/Kinematic/PatchInteractionModel/LocalInteraction/patchInteractionData.H b/src/lagrangian/intermediate/submodels/Kinematic/PatchInteractionModel/LocalInteraction/patchInteractionData.H
index ed9309f8dbf1928756c6cde9f280d3a3d75869c6..1c557764cd4b75fedfac660612ef96e968d493af 100644
--- a/src/lagrangian/intermediate/submodels/Kinematic/PatchInteractionModel/LocalInteraction/patchInteractionData.H
+++ b/src/lagrangian/intermediate/submodels/Kinematic/PatchInteractionModel/LocalInteraction/patchInteractionData.H
@@ -61,7 +61,7 @@ class patchInteractionData
         word interactionTypeName_;
 
         //- Patch name
-        word patchName_;
+        keyType patchName_;
 
         //- Elasticity coefficient
         scalar e_;
@@ -86,7 +86,7 @@ public:
             const word& interactionTypeName() const;
 
             //- Return const access to the patch name
-            const word& patchName() const;
+            const keyType& patchName() const;
 
             //- Return const access to the elasticity coefficient
             scalar e() const;
diff --git a/src/lagrangian/intermediate/submodels/Kinematic/PatchInteractionModel/LocalInteraction/patchInteractionDataList.C b/src/lagrangian/intermediate/submodels/Kinematic/PatchInteractionModel/LocalInteraction/patchInteractionDataList.C
index 3f3d468e86499903e44bd33b4fc5d5f9a04cd8a6..79b0f11fe5a05521fab51a7a80e225108aaebf64 100644
--- a/src/lagrangian/intermediate/submodels/Kinematic/PatchInteractionModel/LocalInteraction/patchInteractionDataList.C
+++ b/src/lagrangian/intermediate/submodels/Kinematic/PatchInteractionModel/LocalInteraction/patchInteractionDataList.C
@@ -24,7 +24,6 @@ License
 \*---------------------------------------------------------------------------*/
 
 #include "patchInteractionDataList.H"
-#include "stringListOps.H"
 #include "emptyPolyPatch.H"
 
 // * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * * //
@@ -46,13 +45,11 @@ Foam::patchInteractionDataList::patchInteractionDataList
     patchGroupIDs_(this->size())
 {
     const polyBoundaryMesh& bMesh = mesh.boundaryMesh();
-    const wordList allPatchNames(bMesh.names());
-
     const List<patchInteractionData>& items = *this;
     forAllReverse(items, i)
     {
-        const word& patchName = items[i].patchName();
-        labelList ids = findIndices(allPatchNames, patchName);
+        const keyType& patchName = items[i].patchName();
+        labelList ids = bMesh.findIndices(patchName);
 
         if (ids.empty())
         {