diff --git a/include/cantera/oneD/StFlow.h b/include/cantera/oneD/StFlow.h
index b2950461c..82be00005 100644
--- a/include/cantera/oneD/StFlow.h
+++ b/include/cantera/oneD/StFlow.h
@@ -75,7 +75,16 @@ public:
     }
 
     //! set the transport manager
-    void setTransport(Transport& trans, bool withSoret = false);
+    void setTransport(Transport& trans);
+
+    //! set the transport manager
+    /*!
+     * @deprecated The withSoret argument is deprecated and unused.
+     *     Use the form of setTransport with signature setTransport(Transport& trans).
+     *     To be removed after Cantera 2.3.
+     */
+    void setTransport(Transport& trans, bool withSoret);
+
     void enableSoret(bool withSoret);
     bool withSoret() const {
         return m_do_soret;
diff --git a/src/oneD/StFlow.cpp b/src/oneD/StFlow.cpp
index 1649d79c3..cbe3c64dd 100644
--- a/src/oneD/StFlow.cpp
+++ b/src/oneD/StFlow.cpp
@@ -141,7 +141,6 @@ void StFlow::resetBadValues(double* xg) {
     }
 }
 
-
 void StFlow::setTransport(Transport& trans, bool withSoret)
 {
     m_trans = &trans;
@@ -157,6 +156,23 @@ void StFlow::setTransport(Transport& trans, bool withSoret)
                            "Thermal diffusion (the Soret effect) "
                            "requires using a multicomponent transport model.");
     }
+
+    warn_deprecated("setTransport(Transport& trans, bool withSoret = false)",
+        "The withSoret argument is deprecated and unused. Use "
+        "the form of setTransport with signature setTransport(Transport& trans)."
+        "To be removed after Cantera 2.3.");
+}
+
+void StFlow::setTransport(Transport& trans)
+{
+    m_trans = &trans;
+    m_do_multicomponent = (m_trans->transportType() == "Multi");
+
+    m_diff.resize(m_nsp*m_points);
+    if (m_do_multicomponent) {
+        m_multidiff.resize(m_nsp*m_nsp*m_points);
+        m_dthermal.resize(m_nsp, m_points, 0.0);
+    } 
 }
 
 void StFlow::enableSoret(bool withSoret)