diff --git a/src/postProcessing/functionObjects/field/streamLine/streamLineParticle.C b/src/postProcessing/functionObjects/field/streamLine/streamLineParticle.C
index eaa65685f7..f9420e969d 100644
--- a/src/postProcessing/functionObjects/field/streamLine/streamLineParticle.C
+++ b/src/postProcessing/functionObjects/field/streamLine/streamLineParticle.C
@@ -223,7 +223,7 @@ bool Foam::streamLineParticle::move
             dt *= fraction;
 
             tEnd -= dt;
-            stepFraction() = 1.0 - tEnd/deltaT;
+            stepFraction() = 1.0 - tEnd/trackTime;
 
             if (tEnd <= ROOTVSMALL)
             {