diff --git a/detectors/cds/bin/do_exonerate.sh b/detectors/cds/bin/do_exonerate.sh
index bb4d810..78b6898 100755
--- a/detectors/cds/bin/do_exonerate.sh
+++ b/detectors/cds/bin/do_exonerate.sh
@@ -1,4 +1,4 @@
-#!/bin/env tcsh -f
+#!/usr/bin/env tcsh -f
 #
 #                           Annotate CDS - Exonerate
 #
diff --git a/detectors/cds/bin/do_filterbx.sh b/detectors/cds/bin/do_filterbx.sh
index c2a283a..3dce353 100755
--- a/detectors/cds/bin/do_filterbx.sh
+++ b/detectors/cds/bin/do_filterbx.sh
@@ -1,4 +1,4 @@
-#!/bin/env tcsh -f
+#!/usr/bin/env tcsh -f
 #
 # filter a DB thru BlastX
 # usually to speedup further DB search 
diff --git a/detectors/cds/bin/go_cds.sh b/detectors/cds/bin/go_cds.sh
index 67dda2b..6561a90 100755
--- a/detectors/cds/bin/go_cds.sh
+++ b/detectors/cds/bin/go_cds.sh
@@ -1,4 +1,4 @@
-#!/bin/env tcsh -f
+#!/usr/bin/env tcsh -f
 #
 #                           Annotate CDS 
 #
diff --git a/detectors/cds/test/go_test.sh b/detectors/cds/test/go_test.sh
index a1e4742..82fc018 100755
--- a/detectors/cds/test/go_test.sh
+++ b/detectors/cds/test/go_test.sh
@@ -1,4 +1,4 @@
-#!/bin/env tcsh -f
+#!/usr/bin/env tcsh -f
 
 setenv Verbose 0