diff --git a/dumux/freeflow/compositional/volumevariables.hh b/dumux/freeflow/compositional/volumevariables.hh
index d4adfb231901358a18cdf1e910217fbb65d29a22..f35e1305d9f347a5631b438a77c27c1024537156 100644
--- a/dumux/freeflow/compositional/volumevariables.hh
+++ b/dumux/freeflow/compositional/volumevariables.hh
@@ -255,7 +255,7 @@ public:
      * \param compIIdx the index of the component which diffusive
      * \param compJIdx the index of the component with respect to which compIIdx diffuses
      */
-    [[deprecated("Signature deprecated. Use diffusionCoefficient(phaseIdx, compIIdx, compJIdx)!")]]
+    [[deprecated("Will be removed after release 3.2. Use diffusionCoefficient(phaseIdx, compIIdx, compJIdx)!")]]
     Scalar diffusionCoefficient(int compIIdx, int compJIdx = 0) const
     {
        if (compIIdx == compJIdx)
diff --git a/dumux/porousmediumflow/1pnc/volumevariables.hh b/dumux/porousmediumflow/1pnc/volumevariables.hh
index 1356fa98473234be18ec52fd6485938f6518d582..2013dc8914fa28ce365fe81c39a4b005739c699f 100644
--- a/dumux/porousmediumflow/1pnc/volumevariables.hh
+++ b/dumux/porousmediumflow/1pnc/volumevariables.hh
@@ -331,7 +331,7 @@ public:
     /*!
      * \brief Returns the binary diffusion coefficients for a phase in \f$[m^2/s]\f$.
      */
-    [[deprecated("Signature deprecated. Use diffusionCoefficient(phaseIdx, compIIdx, compJIdx)!")]]
+    [[deprecated("Will be removed after release 3.2. Use diffusionCoefficient(phaseIdx, compIIdx, compJIdx)!")]]
     Scalar diffusionCoefficient(int phaseIdx, int compIdx) const
     { return diffCoeff_(phaseIdx, FluidSystem::getMainComponent(phaseIdx), compIdx); }
 
diff --git a/dumux/porousmediumflow/2p2c/volumevariables.hh b/dumux/porousmediumflow/2p2c/volumevariables.hh
index 23c69f2635a1851bc10402a3d0c2450630f2b7e4..fc5e2ebfe4c295452aa4d77727106094166a696f 100644
--- a/dumux/porousmediumflow/2p2c/volumevariables.hh
+++ b/dumux/porousmediumflow/2p2c/volumevariables.hh
@@ -387,7 +387,7 @@ public:
     /*!
      * \brief Returns the binary diffusion coefficients for a phase in \f$[m^2/s]\f$.
      */
-    [[deprecated("Signature deprecated. Use diffusionCoefficient(phaseIdx, compIIdx, compJIdx)!")]]
+    [[deprecated("Will be removed after release 3.2. Use diffusionCoefficient(phaseIdx, compIIdx, compJIdx)!")]]
     Scalar diffusionCoefficient(int phaseIdx, int compIdx) const
     { return diffCoeff_(phaseIdx, FluidSystem::getMainComponent(phaseIdx), compIdx); }
 
diff --git a/dumux/porousmediumflow/2pnc/volumevariables.hh b/dumux/porousmediumflow/2pnc/volumevariables.hh
index 969dee51183e9853767c221a672d40bcbde3dc92..3efdd790b746aa63c0410c2015f91d29b453bfb4 100644
--- a/dumux/porousmediumflow/2pnc/volumevariables.hh
+++ b/dumux/porousmediumflow/2pnc/volumevariables.hh
@@ -453,7 +453,7 @@ public:
     /*!
      * \brief Returns the diffusion coefficient
      */
-    [[deprecated("Signature deprecated. Use diffusionCoefficient(phaseIdx, compIIdx, compJIdx)!")]]
+    [[deprecated("Will be removed after release 3.2. Use diffusionCoefficient(phaseIdx, compIIdx, compJIdx)!")]]
     Scalar diffusionCoefficient(int phaseIdx, int compIdx) const
     {
         if (compIdx != phaseIdx)
diff --git a/dumux/porousmediumflow/3p3c/volumevariables.hh b/dumux/porousmediumflow/3p3c/volumevariables.hh
index b7f825cee1b2cfa5082bad6418649c0b42c83bb5..1bf86058b2a4751c783f5772d79bcd8f742bd714 100644
--- a/dumux/porousmediumflow/3p3c/volumevariables.hh
+++ b/dumux/porousmediumflow/3p3c/volumevariables.hh
@@ -713,7 +713,7 @@ public:
     /*!
      * \brief Returns the diffusion coefficient
      */
-    [[deprecated("Signature deprecated. Use diffusionCoefficient(phaseIdx, compIIdx, compJIdx)!")]]
+    [[deprecated("Will be removed after release 3.2. Use diffusionCoefficient(phaseIdx, compIIdx, compJIdx)!")]]
     Scalar diffusionCoefficient(int phaseIdx, int compIdx) const
     {
         if (compIdx != phaseIdx)
diff --git a/dumux/porousmediumflow/3pwateroil/volumevariables.hh b/dumux/porousmediumflow/3pwateroil/volumevariables.hh
index 207390b2ca1ceb5038d4f3e869a00161505fbdd1..1c7e703becaf88af7d6f49ec75fe84ea0a22adb3 100644
--- a/dumux/porousmediumflow/3pwateroil/volumevariables.hh
+++ b/dumux/porousmediumflow/3pwateroil/volumevariables.hh
@@ -906,7 +906,7 @@ public:
     /*!
      * \brief Returns the diffusion coefficient
      */
-    [[deprecated("Signature deprecated. Use diffusionCoefficient(phaseIdx, compIIdx, compJIdx)!")]]
+    [[deprecated("Will be removed after release 3.2. Use diffusionCoefficient(phaseIdx, compIIdx, compJIdx)!")]]
     Scalar diffusionCoefficient(int phaseIdx, int compIdx) const
     { return diffCoeff_(phaseIdx, FluidSystem::getMainComponent(phaseIdx), compIdx); }
 
diff --git a/dumux/porousmediumflow/co2/volumevariables.hh b/dumux/porousmediumflow/co2/volumevariables.hh
index d63f41b8b2ce99d9a2d6112a12015e38c4e6846e..ea08710c4ff29488f7aa6d03b42775b88f505d27 100644
--- a/dumux/porousmediumflow/co2/volumevariables.hh
+++ b/dumux/porousmediumflow/co2/volumevariables.hh
@@ -466,7 +466,7 @@ public:
     /*!
      * \brief Returns the binary diffusion coefficients for a phase in \f$[m^2/s]\f$.
      */
-    [[deprecated("Signature deprecated. Use diffusionCoefficient(phaseIdx, compIIdx, compJIdx)!")]]
+    [[deprecated("Will be removed after release 3.2. Use diffusionCoefficient(phaseIdx, compIIdx, compJIdx)!")]]
     Scalar diffusionCoefficient(int phaseIdx, int compIdx) const
     {
         if (phaseIdx == compIdx)
diff --git a/dumux/porousmediumflow/mpnc/volumevariables.hh b/dumux/porousmediumflow/mpnc/volumevariables.hh
index 82e5db9cdea61c7074096f36cdf0af2276353bd9..30eac0424d4426ebaa6b2a70597cb2eff2d151eb 100644
--- a/dumux/porousmediumflow/mpnc/volumevariables.hh
+++ b/dumux/porousmediumflow/mpnc/volumevariables.hh
@@ -951,7 +951,7 @@ public:
     /*!
      * \brief Returns the diffusion coefficient
      */
-    [[deprecated("Signature deprecated. Use diffusionCoefficient(phaseIdx, compIIdx, compJIdx)!")]]
+    [[deprecated("Will be removed after release 3.2. Use diffusionCoefficient(phaseIdx, compIIdx, compJIdx)!")]]
     Scalar diffusionCoefficient(int phaseIdx, int compIdx) const
     {
         if (compIdx != phaseIdx)
diff --git a/dumux/porousmediumflow/richards/volumevariables.hh b/dumux/porousmediumflow/richards/volumevariables.hh
index 7f0cafd59f941618ed5dc3897a8ce62a11a72e9c..3ed8fc01d6ded5f5cbba1039a541a5bf66b68790 100644
--- a/dumux/porousmediumflow/richards/volumevariables.hh
+++ b/dumux/porousmediumflow/richards/volumevariables.hh
@@ -496,7 +496,7 @@ public:
      * \param phaseIdx The phase index
      * \param compIdx The component index
      */
-    [[deprecated("Signature deprecated. Use diffusionCoefficient(phaseIdx, compIIdx, compJIdx)!")]]
+    [[deprecated("Will be removed after release 3.2. Use diffusionCoefficient(phaseIdx, compIIdx, compJIdx)!")]]
     Scalar diffusionCoefficient(int phaseIdx, int compIdx) const
     {
         assert(enableWaterDiffusionInAir() && phaseIdx == FluidSystem::gasPhaseIdx && compIdx == FluidSystem::comp0Idx);
diff --git a/dumux/porousmediumflow/richardsnc/volumevariables.hh b/dumux/porousmediumflow/richardsnc/volumevariables.hh
index 6093ebda74016954ac61ddf56949fda9598f5ef6..c991d6b613963f844a1ba78ab38ea77273f78716 100644
--- a/dumux/porousmediumflow/richardsnc/volumevariables.hh
+++ b/dumux/porousmediumflow/richardsnc/volumevariables.hh
@@ -410,7 +410,7 @@ public:
      * \param phaseIdx The index of the phase.
      * \param compIdx The index of the component
      */
-    [[deprecated("Signature deprecated. Use diffusionCoefficient(phaseIdx, compIIdx, compJIdx)!")]]
+    [[deprecated("Will be removed after release 3.2. Use diffusionCoefficient(phaseIdx, compIIdx, compJIdx)!")]]
     Scalar diffusionCoefficient(const int phaseIdx, const int compIdx) const
     { return diffCoeff_(phaseIdx, FluidSystem::getMainComponent(phaseIdx), compIdx);}
 
diff --git a/dumux/porousmediumflow/tracer/volumevariables.hh b/dumux/porousmediumflow/tracer/volumevariables.hh
index 2a4d39abc0b8f117990593818cf76d9d74bef4a2..11a1af6f8dda305c7595573c4053de8aa45e7d81 100644
--- a/dumux/porousmediumflow/tracer/volumevariables.hh
+++ b/dumux/porousmediumflow/tracer/volumevariables.hh
@@ -186,7 +186,7 @@ public:
     /*!
      * \brief Returns the binary diffusion coefficients for a phase in \f$[m^2/s]\f$.
      */
-    [[deprecated("Signature deprecated. Use diffusionCoefficient(phaseIdx, compIIdx, compJIdx)!")]]
+    [[deprecated("Will be removed after release 3.2. Use diffusionCoefficient(phaseIdx, compIIdx, compJIdx)!")]]
     Scalar diffusionCoefficient(int phaseIdx, int compIdx) const
     { return diffCoeff_[compIdx]; }