diff --git a/Cantera/src/numerics/ResidJacEval.cpp b/Cantera/src/numerics/ResidJacEval.cpp
index bb54b9423..18168c055 100644
--- a/Cantera/src/numerics/ResidJacEval.cpp
+++ b/Cantera/src/numerics/ResidJacEval.cpp
@@ -130,8 +130,9 @@ namespace Cantera {
    *
    */
   void ResidJacEval::
-  getInitialConditions(doublereal t0, size_t leny, 
-		       doublereal * y) {
+  getInitialConditions(doublereal t0, 
+		       doublereal * const y, doublereal * const ydot) {
+    size_t leny = neq_;
     getInitialConditionsDot(t0, leny, y, 0);
   }
 
diff --git a/Cantera/src/numerics/ResidJacEval.h b/Cantera/src/numerics/ResidJacEval.h
index eb33daabf..b5c72ff68 100644
--- a/Cantera/src/numerics/ResidJacEval.h
+++ b/Cantera/src/numerics/ResidJacEval.h
@@ -94,13 +94,13 @@ namespace Cantera {
 					 doublereal * const y,
 					 doublereal * const ydot);
 
-    virtual void getInitialConditions(const doublereal t0, const size_t leny, 
-				      doublereal * const y);
+    virtual void getInitialConditions(const doublereal t0, 
+				      doublereal * const y, 
+                                      doublereal * const ydot);
   
     virtual void filterSolnPrediction(doublereal t,
 				      doublereal * const y);
 
-
     void setAtol(doublereal atol);
 
     virtual void evalTimeTrackingEqns(const doublereal t, const doublereal deltaT,