diff --git a/src/postProcessing/functionObjects/forces/forceCoeffs/forceCoeffs.C b/src/postProcessing/functionObjects/forces/forceCoeffs/forceCoeffs.C
index ef37661708..038bc81c58 100644
--- a/src/postProcessing/functionObjects/forces/forceCoeffs/forceCoeffs.C
+++ b/src/postProcessing/functionObjects/forces/forceCoeffs/forceCoeffs.C
@@ -3,7 +3,7 @@
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
     \\  /    A nd           | Copyright (C) 2011-2015 OpenFOAM Foundation
-     \\/     M anipulation  | Copyright (C) 2015 OpenCFD Ltd.
+     \\/     M anipulation  | Copyright (C) 2015-2016 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -219,7 +219,7 @@ Foam::forceCoeffs::forceCoeffs
     CdBinFilePtr_(),
     ClBinFilePtr_()
 {
-    if (readFields)
+    if (active_ && readFields)
     {
         read(dict);
         if (log_) Info << endl;
@@ -310,6 +310,12 @@ void Foam::forceCoeffs::execute()
 
     forces::calcForcesMoment();
 
+    // Need to re-check active_ flag - may have been reset in calcForcesMoment
+    if (!active_)
+    {
+        return;
+    }
+
     createFiles();
 
     scalar pDyn = 0.5*rhoRef_*magUInf_*magUInf_;
diff --git a/src/postProcessing/functionObjects/forces/forces/forces.C b/src/postProcessing/functionObjects/forces/forces/forces.C
index 9501fad1b0..6e7acae283 100644
--- a/src/postProcessing/functionObjects/forces/forces/forces.C
+++ b/src/postProcessing/functionObjects/forces/forces/forces.C
@@ -3,7 +3,7 @@
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
     \\  /    A nd           | Copyright (C) 2011-2015 OpenFOAM Foundation
-     \\/     M anipulation  | Copyright (C) 2015 OpenCFD Ltd.
+     \\/     M anipulation  | Copyright (C) 2015-2016 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -279,8 +279,8 @@ void Foam::forces::initialiseBins()
         // Allocate storage for forces and moments
         forAll(force_, i)
         {
-            force_[i].setSize(nBin_);
-            moment_[i].setSize(nBin_);
+            force_[i].setSize(nBin_, vector::zero);
+            moment_[i].setSize(nBin_, vector::zero);
         }
     }
 }
@@ -841,8 +841,8 @@ Foam::forces::forces
 
     forAll(force_, i)
     {
-        force_[i].setSize(nBin_);
-        moment_[i].setSize(nBin_);
+        force_[i].setSize(nBin_, vector::zero);
+        moment_[i].setSize(nBin_, vector::zero);
     }
 }
 
@@ -944,8 +944,8 @@ void Foam::forces::read(const dictionary& dict)
         // Allocate storage for forces and moments
         forAll(force_, i)
         {
-            force_[i].setSize(1);
-            moment_[i].setSize(1);
+            force_[i].setSize(1, vector::zero);
+            moment_[i].setSize(1, vector::zero);
         }
     }