diff --git a/src/OpenFOAM/containers/Dictionaries/DictionaryBase/DictionaryBase.C b/src/OpenFOAM/containers/Dictionaries/DictionaryBase/DictionaryBase.C
index 691ba1fdca..3227e13b21 100644
--- a/src/OpenFOAM/containers/Dictionaries/DictionaryBase/DictionaryBase.C
+++ b/src/OpenFOAM/containers/Dictionaries/DictionaryBase/DictionaryBase.C
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2013 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -45,7 +45,9 @@ void Foam::DictionaryBase<IDLListType, T>::addEntries()
 // * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
 template<class IDLListType, class T>
-Foam::DictionaryBase<IDLListType, T>::DictionaryBase()
+Foam::DictionaryBase<IDLListType, T>::DictionaryBase(const label size)
+:
+    hashedTs_(size)
 {}
 
 
diff --git a/src/OpenFOAM/containers/Dictionaries/DictionaryBase/DictionaryBase.H b/src/OpenFOAM/containers/Dictionaries/DictionaryBase/DictionaryBase.H
index 1bb12cbb79..7d788fe4df 100644
--- a/src/OpenFOAM/containers/Dictionaries/DictionaryBase/DictionaryBase.H
+++ b/src/OpenFOAM/containers/Dictionaries/DictionaryBase/DictionaryBase.H
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2013 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -90,8 +90,8 @@ public:
 
     // Constructors
 
-        //- Null constructor
-        DictionaryBase();
+        //- Construct given initial table size
+        DictionaryBase(const label size = 128);
 
         //- Copy construct
         DictionaryBase(const DictionaryBase&);
diff --git a/src/OpenFOAM/containers/Dictionaries/PtrDictionary/PtrDictionary.C b/src/OpenFOAM/containers/Dictionaries/PtrDictionary/PtrDictionary.C
index 29bbb0f8e0..bdd9e5fbc8 100644
--- a/src/OpenFOAM/containers/Dictionaries/PtrDictionary/PtrDictionary.C
+++ b/src/OpenFOAM/containers/Dictionaries/PtrDictionary/PtrDictionary.C
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2013 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -28,7 +28,9 @@ License
 // * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
 template<class T>
-Foam::PtrDictionary<T>::PtrDictionary()
+Foam::PtrDictionary<T>::PtrDictionary(const label size)
+:
+    DictionaryBase<DLPtrList<T>, T>(size)
 {}
 
 
diff --git a/src/OpenFOAM/containers/Dictionaries/PtrDictionary/PtrDictionary.H b/src/OpenFOAM/containers/Dictionaries/PtrDictionary/PtrDictionary.H
index 602bae3d53..efa739d26a 100644
--- a/src/OpenFOAM/containers/Dictionaries/PtrDictionary/PtrDictionary.H
+++ b/src/OpenFOAM/containers/Dictionaries/PtrDictionary/PtrDictionary.H
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2013 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -61,8 +61,8 @@ public:
 
     // Constructors
 
-        //- Null constructor
-        PtrDictionary();
+        //- Construct given initial table size
+        PtrDictionary(const label size = 128);
 
         //- Copy construct
         PtrDictionary(const PtrDictionary&);
diff --git a/src/OpenFOAM/containers/Dictionaries/UPtrDictionary/UPtrDictionary.C b/src/OpenFOAM/containers/Dictionaries/UPtrDictionary/UPtrDictionary.C
index 2600f07bc7..bc81b3784b 100644
--- a/src/OpenFOAM/containers/Dictionaries/UPtrDictionary/UPtrDictionary.C
+++ b/src/OpenFOAM/containers/Dictionaries/UPtrDictionary/UPtrDictionary.C
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2013 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -28,7 +28,9 @@ License
 // * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
 template<class T>
-Foam::UPtrDictionary<T>::UPtrDictionary()
+Foam::UPtrDictionary<T>::UPtrDictionary(const label size)
+:
+    DictionaryBase<DLList<T*>, T>(size)
 {}
 
 
diff --git a/src/OpenFOAM/containers/Dictionaries/UPtrDictionary/UPtrDictionary.H b/src/OpenFOAM/containers/Dictionaries/UPtrDictionary/UPtrDictionary.H
index 8923799589..f83825a327 100644
--- a/src/OpenFOAM/containers/Dictionaries/UPtrDictionary/UPtrDictionary.H
+++ b/src/OpenFOAM/containers/Dictionaries/UPtrDictionary/UPtrDictionary.H
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2013 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -61,8 +61,8 @@ public:
 
     // Constructors
 
-        //- Null constructor
-        UPtrDictionary();
+        //- Construct given initial table size
+        UPtrDictionary(const label size = 128);
 
         //- Copy construct
         UPtrDictionary(const UPtrDictionary&);