diff --git a/include/cantera/transport/SimpleTransport.h b/include/cantera/transport/SimpleTransport.h
index e68d221e9..2dac430be 100644
--- a/include/cantera/transport/SimpleTransport.h
+++ b/include/cantera/transport/SimpleTransport.h
@@ -458,13 +458,6 @@ protected:
     //! thermal conductivity.
     void updateCond_T();
 
-    //! Update the concentration parts of the viscosities
-    /*!
-     * Internal routine is run whenever the update_boolean is false. This
-     * routine will calculate internal values for the species viscosities.
-     */
-    void updateViscosities_C();
-
     //! Update the binary diffusion coefficients wrt T.
     /*!
      * These are evaluated from the polynomial fits at unit pressure (1 Pa).
diff --git a/src/transport/SimpleTransport.cpp b/src/transport/SimpleTransport.cpp
index 5f5762625..7ca1a1691 100644
--- a/src/transport/SimpleTransport.cpp
+++ b/src/transport/SimpleTransport.cpp
@@ -579,10 +579,6 @@ void SimpleTransport::updateDiff_T()
     m_diff_mix_ok = false;
 }
 
-void SimpleTransport::updateViscosities_C()
-{
-}
-
 void SimpleTransport::updateViscosity_T()
 {
     if (compositionDepType_ == LTI_MODEL_SOLVENT) {