diff --git a/src/thermo/Mu0Poly.h b/include/cantera/thermo/Mu0Poly.h
similarity index 100%
rename from src/thermo/Mu0Poly.h
rename to include/cantera/thermo/Mu0Poly.h
diff --git a/src/thermo/GeneralSpeciesThermo.cpp b/src/thermo/GeneralSpeciesThermo.cpp
index 5c871aa4b..634d9cab3 100644
--- a/src/thermo/GeneralSpeciesThermo.cpp
+++ b/src/thermo/GeneralSpeciesThermo.cpp
@@ -11,7 +11,7 @@
 #include "NasaPoly2.h"
 #include "ShomatePoly.h"
 #include "ConstCpPoly.h"
-#include "Mu0Poly.h"
+#include "cantera/thermo/Mu0Poly.h"
 #ifdef WITH_ADSORBATE
 #include "cantera/thermo/AdsorbateThermo.h"
 #endif
diff --git a/src/thermo/Mu0Poly.cpp b/src/thermo/Mu0Poly.cpp
index 09fc760cc..5a7fe2778 100644
--- a/src/thermo/Mu0Poly.cpp
+++ b/src/thermo/Mu0Poly.cpp
@@ -5,7 +5,7 @@
  *  on a piecewise constant mu0 interpolation
  *  (see \ref spthermo and class \link Cantera::Mu0Poly Mu0Poly\endlink).
  */
-#include "Mu0Poly.h"
+#include "cantera/thermo/Mu0Poly.h"
 #include "cantera/base/ctexceptions.h"
 #include "cantera/thermo/speciesThermoTypes.h"
 #include "cantera/thermo/SpeciesThermo.h"
diff --git a/src/thermo/SpeciesThermoFactory.cpp b/src/thermo/SpeciesThermoFactory.cpp
index 2569d8d59..a90b277d6 100644
--- a/src/thermo/SpeciesThermoFactory.cpp
+++ b/src/thermo/SpeciesThermoFactory.cpp
@@ -14,7 +14,7 @@ using namespace std;
 #include "ShomateThermo.h"
 #include "cantera/thermo/SimpleThermo.h"
 #include "cantera/thermo/GeneralSpeciesThermo.h"
-#include "Mu0Poly.h"
+#include "cantera/thermo/Mu0Poly.h"
 #include "Nasa9PolyMultiTempRegion.h"
 #include "cantera/thermo/Nasa9Poly1.h"