diff --git a/src/Prep/TerraFit/Makefile.am b/src/Prep/TerraFit/Makefile.am
index 6d206b04..4354064b 100644
--- a/src/Prep/TerraFit/Makefile.am
+++ b/src/Prep/TerraFit/Makefile.am
@@ -1 +1,6 @@
-EXTRA_DIST = terrafit.README terrafit.py
+bin_SCRIPTS = terrafit.py
+EXTRA_DIST = terrafit.README terrafit.py.in
+
+terrafit.py: $(srcdir)/terrafit.py.in
+	echo ${bindir}
+	sed -e "s%__bindir__%${bindir}%g" $(srcdir)/terrafit.py.in > terrafit.py
\ No newline at end of file
diff --git a/src/Prep/TerraFit/terrafit.py b/src/Prep/TerraFit/terrafit.py.in
old mode 100755
new mode 100644
similarity index 98%
rename from src/Prep/TerraFit/terrafit.py
rename to src/Prep/TerraFit/terrafit.py.in
index 7d3dc003..af9714fc
--- a/src/Prep/TerraFit/terrafit.py
+++ b/src/Prep/TerraFit/terrafit.py.in
@@ -38,7 +38,7 @@ def pre_terra(pgmName, data, span_x, span_y, max_z, min_z):
 ##
 def run_terra(thresh, minnodes, count, factor, objName, pgmName):
     print
-    command = "../Terra/terra -e %f -n %d -p %d -h %f -o %s obj %s"%(thresh, minnodes, count, factor, objName, pgmName)
+    command = "__bindir__/terra -e %f -n %d -p %d -h %f -o %s obj %s"%(thresh, minnodes, count, factor, objName, pgmName)
     print command
     npts = -1
     error = -99999.9