diff --git a/test/porousmediumflow/1p/sequential/test_diffusion.input b/test/porousmediumflow/1p/sequential/test_diffusion.input
index c78c3672d9ad7dd515e1bdd067be356ad7f2e967..bb3e7d6221129e591e0c489675b03caa5dd7e166 100644
--- a/test/porousmediumflow/1p/sequential/test_diffusion.input
+++ b/test/porousmediumflow/1p/sequential/test_diffusion.input
@@ -11,5 +11,5 @@ EnableGravity = false
 LiquidDensity = 1.0
 LiquidKinematicViscosity = 1.0
 
-[LinearSolver]
-PreconditionerIterations = 2
+[LinearSolver.Preconditioner]
+Iterations = 2