diff --git a/src/OpenFOAM/containers/HashTables/HashTable/HashTable.H b/src/OpenFOAM/containers/HashTables/HashTable/HashTable.H
index 926a3f9016..85e19aed49 100644
--- a/src/OpenFOAM/containers/HashTables/HashTable/HashTable.H
+++ b/src/OpenFOAM/containers/HashTables/HashTable/HashTable.H
@@ -737,7 +737,7 @@ protected:
             inline Iterator(bool, table_type* tbl);
 
             //- Construct by finding key in hash table
-            inline Iterator(table_type* tbl, const Key& key);
+            Iterator(table_type* tbl, const Key& key);
 
 
           // Protected Member Functions
diff --git a/src/OpenFOAM/containers/HashTables/HashTable/HashTableI.H b/src/OpenFOAM/containers/HashTables/HashTable/HashTableI.H
index 27ac134006..0373ed9c7f 100644
--- a/src/OpenFOAM/containers/HashTables/HashTable/HashTableI.H
+++ b/src/OpenFOAM/containers/HashTables/HashTable/HashTableI.H
@@ -60,7 +60,7 @@ inline bool Foam::HashTable<T, Key, Hash>::empty() const
 
 
 template<class T, class Key, class Hash>
-bool Foam::HashTable<T, Key, Hash>::found(const Key& key) const
+inline bool Foam::HashTable<T, Key, Hash>::found(const Key& key) const
 {
     if (size_)
     {