diff --git a/src/thermo/NasaThermo.cpp b/src/thermo/NasaThermo.cpp
index cc2a8d337f..7c01169ea8 100644
--- a/src/thermo/NasaThermo.cpp
+++ b/src/thermo/NasaThermo.cpp
@@ -194,18 +194,12 @@ void NasaThermo::reportParams(size_t index, int& type,
         double ttemp;
         lowPoly->reportParameters(n, itype, minTemp, ttemp, refPressure,
                                   c + 1);
-        if (n != index) {
-            throw CanteraError("NasaThermo::reportParams", "Index mismatch");
-        }
         if (itype != NASA1) {
             throw CanteraError("NasaThermo::reportParams",
                                "Thermo type mismatch for low-T polynomial");
         }
         highPoly->reportParameters(n, itype, ttemp, maxTemp, refPressure,
                                    c + 8);
-        if (n != index) {
-            throw CanteraError("NasaThermo::reportParams", "Index mismatch");
-        }
         if (itype != NASA1) {
             throw CanteraError("NasaThermo::reportParams",
                                "Thermo type mismatch for high-T polynomial");
diff --git a/src/thermo/ShomateThermo.h b/src/thermo/ShomateThermo.h
index 3e2a055a74..e00c3c0c0a 100644
--- a/src/thermo/ShomateThermo.h
+++ b/src/thermo/ShomateThermo.h
@@ -312,20 +312,12 @@ class ShomateThermo : public SpeciesThermo
             double ttemp;
             lowPoly->reportParameters(n, itype, minTemp, ttemp, refPressure,
                                       c + 1);
-            if (n != index) {
-                throw CanteraError("ShomateThermo::reportParams",
-                                   "Index mismatch in low-T polynomial");
-            }
             if (itype != SHOMATE && itype != SHOMATE1) {
                 throw CanteraError("ShomateThermo::reportParams",
                                    "Thermo type mismatch in low-T polynomial");
             }
             highPoly->reportParameters(n, itype,  ttemp, maxTemp,
                                        refPressure, c + 8);
-            if (n != index) {
-                throw CanteraError("ShomateThermo::reportParams",
-                                   "Index mismatch in high-T polynomial");
-            }
             if (itype != SHOMATE && itype != SHOMATE1) {
                 throw CanteraError("ShomateThermo::reportParams",
                                    "Thermo type mismatch in high-T polynomial");