diff --git a/applications/solvers/combustion/XiFoam/PDRFoam/setDeltaT.H b/applications/solvers/combustion/XiFoam/PDRFoam/setDeltaT.H
index 98682b6af6..862cf015a8 100644
--- a/applications/solvers/combustion/XiFoam/PDRFoam/setDeltaT.H
+++ b/applications/solvers/combustion/XiFoam/PDRFoam/setDeltaT.H
@@ -35,7 +35,11 @@ if (adjustTimeStep)
 {
     scalar deltaT = maxCo*runTime.deltaTValue()/(CoNum + StCoNum + small);
     deltaT = min(deltaT, fvModels.maxDeltaT());
-    deltaT = min(min(deltaT, 1.0 + 0.1*deltaT), 1.2*runTime.deltaTValue());
+    deltaT = min
+    (
+        min(deltaT, runTime.deltaTValue() + 0.1*deltaT),
+        1.2*runTime.deltaTValue()
+    );
     runTime.setDeltaT(min(deltaT, maxDeltaT));
 
     Info<< "deltaT = " <<  runTime.deltaTValue() << endl;
diff --git a/applications/solvers/compressible/rhoCentralFoam/setDeltaT.H b/applications/solvers/compressible/rhoCentralFoam/setDeltaT.H
index 235313dda6..43705f1be0 100644
--- a/applications/solvers/compressible/rhoCentralFoam/setDeltaT.H
+++ b/applications/solvers/compressible/rhoCentralFoam/setDeltaT.H
@@ -34,7 +34,11 @@ Description
 if (adjustTimeStep)
 {
     scalar deltaT = maxCo*runTime.deltaTValue()/(CoNum + small);
-    deltaT = min(min(deltaT, 1.0 + 0.1*deltaT), 1.2*runTime.deltaTValue());
+    deltaT = min
+    (
+        min(deltaT, runTime.deltaTValue() + 0.1*deltaT),
+        1.2*runTime.deltaTValue()
+    );
     runTime.setDeltaT(min(deltaT, maxDeltaT));
 
     Info<< "deltaT = " <<  runTime.deltaTValue() << endl;
diff --git a/applications/solvers/multiphase/twoLiquidMixingFoam/setDeltaT.H b/applications/solvers/multiphase/twoLiquidMixingFoam/setDeltaT.H
index 7b683fa736..7441fee79f 100644
--- a/applications/solvers/multiphase/twoLiquidMixingFoam/setDeltaT.H
+++ b/applications/solvers/multiphase/twoLiquidMixingFoam/setDeltaT.H
@@ -36,7 +36,11 @@ if (adjustTimeStep)
     scalar deltaT =
         min(maxCo/(CoNum + small), maxAlphaCo/(alphaCoNum + small))
        *runTime.deltaTValue();
-    deltaT = min(min(deltaT, 1.0 + 0.1*deltaT), 1.2*runTime.deltaTValue());
+    deltaT = min
+    (
+        min(deltaT, runTime.deltaTValue() + 0.1*deltaT),
+        1.2*runTime.deltaTValue()
+    );
     runTime.setDeltaT(min(deltaT, maxDeltaT));
 
     Info<< "deltaT = " <<  runTime.deltaTValue() << endl;
diff --git a/src/finiteVolume/cfdTools/general/include/setDeltaT.H b/src/finiteVolume/cfdTools/general/include/setDeltaT.H
index e17ce9ccef..289400edd0 100644
--- a/src/finiteVolume/cfdTools/general/include/setDeltaT.H
+++ b/src/finiteVolume/cfdTools/general/include/setDeltaT.H
@@ -35,7 +35,11 @@ if (adjustTimeStep)
 {
     scalar deltaT = maxCo*runTime.deltaTValue()/(CoNum + small);
     deltaT = min(deltaT, fvModels.maxDeltaT());
-    deltaT = min(min(deltaT, 1.0 + 0.1*deltaT), 1.2*runTime.deltaTValue());
+    deltaT = min
+    (
+        min(deltaT, runTime.deltaTValue() + 0.1*deltaT),
+        1.2*runTime.deltaTValue()
+    );
     runTime.setDeltaT(min(deltaT, maxDeltaT));
 
     Info<< "deltaT = " <<  runTime.deltaTValue() << endl;
diff --git a/src/twoPhaseModels/twoPhaseMixture/VoF/setDeltaT.H b/src/twoPhaseModels/twoPhaseMixture/VoF/setDeltaT.H
index 1e943bff9d..81741d7a8a 100644
--- a/src/twoPhaseModels/twoPhaseMixture/VoF/setDeltaT.H
+++ b/src/twoPhaseModels/twoPhaseMixture/VoF/setDeltaT.H
@@ -37,7 +37,11 @@ if (adjustTimeStep)
         min(maxCo/(CoNum + small), maxAlphaCo/(alphaCoNum + small))
        *runTime.deltaTValue();
     deltaT = min(deltaT, fvModels.maxDeltaT());
-    deltaT = min(min(deltaT, 1.0 + 0.1*deltaT), 1.2*runTime.deltaTValue());
+    deltaT = min
+    (
+        min(deltaT, runTime.deltaTValue() + 0.1*deltaT),
+        1.2*runTime.deltaTValue()
+    );
     runTime.setDeltaT(min(deltaT, maxDeltaT));
 
     Info<< "deltaT = " <<  runTime.deltaTValue() << endl;