diff --git a/Makefile.am b/Makefile.am
index 4a8cfc33..da2b2fa7 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -9,6 +9,8 @@ EXTRA_DIST=\
 	fwrap7.cpp\
 	fwrap8.cpp\
 	IPhreeqc_interface.F90\
+	IPhreeqc.f.inc\
+	IPhreeqc.f90.inc\
 	phreeqcpp/ChartHandler.cpp\
 	phreeqcpp/ChartHandler.h\
 	phreeqcpp/ChartObject.cpp\