diff --git a/Cantera/src/thermo/Nasa9Poly1.cpp b/Cantera/src/thermo/Nasa9Poly1.cpp
index 8016ea1f6..ef2eb75b6 100644
--- a/Cantera/src/thermo/Nasa9Poly1.cpp
+++ b/Cantera/src/thermo/Nasa9Poly1.cpp
@@ -276,8 +276,11 @@ namespace Cantera {
     tlow = m_lowT;
     thigh = m_highT;
     pref = m_Pref;
+    coeffs[0] = 1;
+    coeffs[1] = m_lowT;
+    coeffs[2] = m_highT;
     for (int i = 0; i < 9; i++) {
-      coeffs[i] = m_coeff[i];
+      coeffs[i+3] = m_coeff[i];
     }
 
   }
diff --git a/Cantera/src/thermo/Nasa9Poly1.h b/Cantera/src/thermo/Nasa9Poly1.h
index 89dfdf514..a64b7a3fa 100644
--- a/Cantera/src/thermo/Nasa9Poly1.h
+++ b/Cantera/src/thermo/Nasa9Poly1.h
@@ -196,7 +196,13 @@ namespace Cantera {
      * @param thigh     output - Maximum temperature
      * @param pref      output - reference pressure (Pa).
      * @param coeffs    Vector of coefficients used to set the
-     *                  parameters for the standard state.
+     *                  parameters for the standard state. There are
+     *                  12 of them, designed to be compatible
+     *                  with the multiple temperature formulation.
+     *      coeffs[0] is equal to one.
+     *      coeffs[1] is min temperature
+     *      coeffs[2] is max temperature
+     *      coeffs[3+i] from i =0,9 are the coefficients themselves
      */
     virtual void reportParameters(int &n, int &type,
 				  doublereal &tlow, doublereal &thigh,
diff --git a/Cantera/src/thermo/Nasa9PolyMultiTempRegion.cpp b/Cantera/src/thermo/Nasa9PolyMultiTempRegion.cpp
index 58ab7caeb..08d05d32a 100644
--- a/Cantera/src/thermo/Nasa9PolyMultiTempRegion.cpp
+++ b/Cantera/src/thermo/Nasa9PolyMultiTempRegion.cpp
@@ -343,7 +343,7 @@ namespace Cantera {
 				    doublereal &pref,
 				    doublereal* const coeffs) const {
     n = m_index;
-    type = NASA9;
+    type = NASA9MULTITEMP;
     tlow = m_lowT;
     thigh = m_highT;
     pref = m_Pref;
diff --git a/Cantera/src/thermo/Nasa9PolyMultiTempRegion.h b/Cantera/src/thermo/Nasa9PolyMultiTempRegion.h
index 239ca94c7..6e1cb5f96 100644
--- a/Cantera/src/thermo/Nasa9PolyMultiTempRegion.h
+++ b/Cantera/src/thermo/Nasa9PolyMultiTempRegion.h
@@ -160,6 +160,13 @@ namespace Cantera {
      * @param pref      output - reference pressure (Pa).
      * @param coeffs    Vector of coefficients used to set the
      *                  parameters for the standard state.
+     *      There are 1 + 11*nzones coefficients
+     *      coeffs[0] is equal to nTempZones.
+     *      index = 1
+     *      for each zone:
+     *        coeffs[index] = minTempZone
+     *        coeffs[index+1] = maxTempZone
+     *        coeffs[index+2+i] from i =0,9 are the coefficients themselves
      */
     virtual void reportParameters(int &n, int &type,
 				  doublereal &tlow, doublereal &thigh,