diff --git a/src/finiteVolume/fields/fvPatchFields/derived/pressureInletOutletParSlipVelocity/pressureInletOutletParSlipVelocityFvPatchVectorField.C b/src/finiteVolume/fields/fvPatchFields/derived/pressureInletOutletParSlipVelocity/pressureInletOutletParSlipVelocityFvPatchVectorField.C
index f8002accff..2d0c3d4735 100644
--- a/src/finiteVolume/fields/fvPatchFields/derived/pressureInletOutletParSlipVelocity/pressureInletOutletParSlipVelocityFvPatchVectorField.C
+++ b/src/finiteVolume/fields/fvPatchFields/derived/pressureInletOutletParSlipVelocity/pressureInletOutletParSlipVelocityFvPatchVectorField.C
@@ -130,7 +130,7 @@ void Foam::pressureInletOutletParSlipVelocityFvPatchVectorField::updateCoeffs()
 
     const volVectorField& U = db().lookupObject<volVectorField>("U");
 
-    vectorField Uc = U.boundaryField()[patchI].patchInternalField();
+    vectorField Uc(U.boundaryField()[patchI].patchInternalField());
     Uc -= n()*(Uc & n());
 
     if (phi.dimensions() == dimVelocity*dimArea)
diff --git a/src/finiteVolume/fields/fvPatchFields/derived/waveSurfacePressure/waveSurfacePressureFvPatchScalarField.C b/src/finiteVolume/fields/fvPatchFields/derived/waveSurfacePressure/waveSurfacePressureFvPatchScalarField.C
index cd395a5bc6..c9d50b8930 100644
--- a/src/finiteVolume/fields/fvPatchFields/derived/waveSurfacePressure/waveSurfacePressureFvPatchScalarField.C
+++ b/src/finiteVolume/fields/fvPatchFields/derived/waveSurfacePressure/waveSurfacePressureFvPatchScalarField.C
@@ -187,7 +187,7 @@ void Foam::waveSurfacePressureFvPatchScalarField::updateCoeffs()
 
         operator==(-g.value() & zetap);
     }
-    else if (phi.dimensions() = dimDensity*dimVelocity*dimArea)
+    else if (phi.dimensions() == dimDensity*dimVelocity*dimArea)
     {
         const scalarField& rhop =
             patch().lookupPatchField<volScalarField, scalar>(rhoName_);
diff --git a/src/regionModels/pyrolysisModels/pyrolysisModel/pyrolysisModelCollection.C b/src/regionModels/pyrolysisModels/pyrolysisModel/pyrolysisModelCollection.C
index 4bc3ca977e..c9c097fc94 100644
--- a/src/regionModels/pyrolysisModels/pyrolysisModel/pyrolysisModelCollection.C
+++ b/src/regionModels/pyrolysisModels/pyrolysisModel/pyrolysisModelCollection.C
@@ -28,11 +28,14 @@ License
 
 // * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
 
-defineTemplateTypeNameAndDebug
-(
-    Foam::IOPtrList<Foam::regionModels::pyrolysisModels::pyrolysisModel>,
-    0
-);
+namespace Foam
+{
+    defineTemplateTypeNameAndDebug
+    (
+        IOPtrList<regionModels::pyrolysisModels::pyrolysisModel>,
+        0
+    );
+}
 
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
diff --git a/src/turbulenceModels/compressible/turbulenceModel/derivedFvPatchFields/externalWallHeatFluxTemperature/externalWallHeatFluxTemperatureFvPatchScalarField.C b/src/turbulenceModels/compressible/turbulenceModel/derivedFvPatchFields/externalWallHeatFluxTemperature/externalWallHeatFluxTemperatureFvPatchScalarField.C
index 2a396388c8..3671592e11 100644
--- a/src/turbulenceModels/compressible/turbulenceModel/derivedFvPatchFields/externalWallHeatFluxTemperature/externalWallHeatFluxTemperatureFvPatchScalarField.C
+++ b/src/turbulenceModels/compressible/turbulenceModel/derivedFvPatchFields/externalWallHeatFluxTemperature/externalWallHeatFluxTemperatureFvPatchScalarField.C
@@ -199,7 +199,7 @@ void Foam::externalWallHeatFluxTemperatureFvPatchScalarField::updateCoeffs()
     }
 
     scalarField q(size(), 0.0);
-    scalarField KDelta = K(*this)*patch().deltaCoeffs();
+    scalarField KDelta(K(*this)*patch().deltaCoeffs());
 
     if (oldMode_ == fixedHeatFlux)
     {