diff --git a/tools/doc/Cantera.cfg.in b/tools/doc/Cantera.cfg.in
index e9d8ce651..c9d20ef2d 100755
--- a/tools/doc/Cantera.cfg.in
+++ b/tools/doc/Cantera.cfg.in
@@ -129,7 +129,9 @@ FILE_PATTERNS          = Kinetics.h Kinetics.cpp \
                          WaterPropsIAPWS.h  WaterPropsIAPWS.cpp \
                          WaterSSTP.h WaterSSTP.cpp \
                          PureFluidPhase.h PureFluidPhase.cpp \
-                         equil.h MultiPhase.h MultiPhase.cpp BasisOptimize.cpp
+                         equil.h MultiPhase.h MultiPhase.cpp BasisOptimize.cpp \
+                         Nasa9Poly1.h Nasa9Poly1.cpp \
+                         Nasa9PolyMultiTempRegion.h Nasa9PolyMultiTempRegion.cpp
 RECURSIVE              = NO
 EXCLUDE                = CVS examples  converters zeroD
 EXCLUDE_SYMLINKS       = NO