diff --git a/configure.ac b/configure.ac
index a6352091..cc3d8df4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -390,6 +390,8 @@ AC_CONFIG_FILES([ \
 	src/Prep/Photo/Makefile \
 	src/Prep/ShapeFile/Makefile \
 	src/Prep/TGVPF/Makefile \
+	src/Prep/Terra/Makefile \
+	src/Prep/TerraFit/Makefile \
 	src/Prep/UserDef/Makefile \
 	src/Utils/Makefile \
 	src/Utils/cdrom/Makefile \
diff --git a/src/Prep/Makefile.am b/src/Prep/Makefile.am
index 6f69f8a6..373d05b2 100644
--- a/src/Prep/Makefile.am
+++ b/src/Prep/Makefile.am
@@ -9,4 +9,6 @@ SUBDIRS = \
 	Photo \
 	ShapeFile \
 	TGVPF \
+	Terra \
+	TerraFit \
 	UserDef