diff --git a/include/cantera/clib/ctonedim.h b/include/cantera/clib/ctonedim.h
index 0770ada99..77c856ed4 100644
--- a/include/cantera/clib/ctonedim.h
+++ b/include/cantera/clib/ctonedim.h
@@ -56,7 +56,7 @@ extern "C" {
     CANTERA_CAPI int inlet_setSpreadRate(int i, double v);
 
     CANTERA_CAPI int stflow_new(int iph, int ikin, int itr, int itype);
-    CANTERA_CAPI int stflow_setTransport(int i, int itr, int iSoret);
+    CANTERA_CAPI int stflow_setTransport(int i, int itr);
     CANTERA_CAPI int stflow_enableSoret(int i, int iSoret);
     CANTERA_CAPI int stflow_setPressure(int i, double p);
     CANTERA_CAPI double stflow_pressure(int i);
diff --git a/src/clib/ctonedim.cpp b/src/clib/ctonedim.cpp
index be4375eab..98d1dccd5 100644
--- a/src/clib/ctonedim.cpp
+++ b/src/clib/ctonedim.cpp
@@ -387,11 +387,10 @@ extern "C" {
     }
 
 
-    int stflow_setTransport(int i, int itr, int iSoret)
+    int stflow_setTransport(int i, int itr)
     {
         try {
-            bool withSoret = (iSoret > 0);
-            DomainCabinet::get<StFlow>(i).setTransport(TransportCabinet::item(itr), withSoret);
+            DomainCabinet::get<StFlow>(i).setTransport(TransportCabinet::item(itr));
             return 0;
         } catch (...) {
             return handleAllExceptions(-1, ERR);