diff --git a/src/postProcessing/functionObjects/field/streamLine/controlDict b/src/postProcessing/functionObjects/field/streamLine/controlDict
index 048b7af4f3..4d51dd82e1 100644
--- a/src/postProcessing/functionObjects/field/streamLine/controlDict
+++ b/src/postProcessing/functionObjects/field/streamLine/controlDict
@@ -60,7 +60,7 @@ functions
         setFormat       vtk; //gnuplot; //xmgr; //raw; //jplot;
 
         // Velocity field to use for tracking.
-        U U;
+        UName U;
 
         // Interpolation method. Default is cellPoint. See sampleDict.
         //interpolationScheme pointMVC;
diff --git a/src/postProcessing/functionObjects/field/streamLine/streamLine.C b/src/postProcessing/functionObjects/field/streamLine/streamLine.C
index ae902f9c54..03a5b8b539 100644
--- a/src/postProcessing/functionObjects/field/streamLine/streamLine.C
+++ b/src/postProcessing/functionObjects/field/streamLine/streamLine.C
@@ -318,7 +318,22 @@ void Foam::streamLine::read(const dictionary& dict)
     {
         //dict_ = dict;
         dict.lookup("fields") >> fields_;
-        UName_ = dict.lookupOrDefault<word>("U", "U");
+        if (dict.found("UName"))
+        {
+            dict.lookup("UName") >> UName_;
+        }
+        else
+        {
+            UName_ = "U";
+            if (dict.found("U"))
+            {
+                IOWarningIn("streamLine::read(const dictionary&)", dict)
+                    << "Using deprecated entry \"U\"."
+                    << " Please use \"UName\" instead."
+                    << endl;
+                dict.lookup("U") >> UName_;
+            }
+        }
         dict.lookup("trackForward") >> trackForward_;
         dict.lookup("lifeTime") >> lifeTime_;
         if (lifeTime_ < 1)
diff --git a/tutorials/incompressible/simpleFoam/motorBike/system/streamLines b/tutorials/incompressible/simpleFoam/motorBike/system/streamLines
index 1f9488d8c2..82c3f1d68c 100644
--- a/tutorials/incompressible/simpleFoam/motorBike/system/streamLines
+++ b/tutorials/incompressible/simpleFoam/motorBike/system/streamLines
@@ -17,7 +17,7 @@ streamLines
     setFormat       vtk; //gnuplot; //xmgr; //raw; //jplot;
 
     // Velocity field to use for tracking.
-    U U;
+    UName U;
 
     // Tracked forwards (+U) or backwards (-U)
     trackForward    true;
diff --git a/tutorials/incompressible/simpleFoam/pitzDaily/system/controlDict b/tutorials/incompressible/simpleFoam/pitzDaily/system/controlDict
index a3baf4a417..aaedd23dab 100644
--- a/tutorials/incompressible/simpleFoam/pitzDaily/system/controlDict
+++ b/tutorials/incompressible/simpleFoam/pitzDaily/system/controlDict
@@ -61,7 +61,7 @@ functions
         setFormat       vtk; //gnuplot; //xmgr; //raw; //jplot;
 
         // Velocity field to use for tracking.
-        U U;
+        UName U;
 
         // Tracked forwards (+U) or backwards (-U)
         trackForward    true;
diff --git a/tutorials/incompressible/simpleFoam/pitzDailyExptInlet/system/controlDict b/tutorials/incompressible/simpleFoam/pitzDailyExptInlet/system/controlDict
index 89dd2ff19a..c2b5d2e493 100644
--- a/tutorials/incompressible/simpleFoam/pitzDailyExptInlet/system/controlDict
+++ b/tutorials/incompressible/simpleFoam/pitzDailyExptInlet/system/controlDict
@@ -61,7 +61,7 @@ functions
         setFormat       vtk; //gnuplot; //xmgr; //raw; //jplot;
 
         // Velocity field to use for tracking.
-        U U;
+        UName U;
 
         // Tracked forwards (+U) or backwards (-U)
         trackForward    true;