diff --git a/Scripts/MarkerAlignTrim.pl b/Scripts/MarkerAlignTrim.pl
index 70ad62c..92da312 100755
--- a/Scripts/MarkerAlignTrim.pl
+++ b/Scripts/MarkerAlignTrim.pl
@@ -1,3 +1,4 @@
+#!/usr/bin/perl
 # AMPHORA (version 2.0) An Automated Phylogenomic Inference Pipeline for Bacterial and Archaeal Sequences. 
 # Copyright 2011 by Martin Wu
  
diff --git a/Scripts/MarkerScanner.pl b/Scripts/MarkerScanner.pl
index e3a9279..f546d94 100755
--- a/Scripts/MarkerScanner.pl
+++ b/Scripts/MarkerScanner.pl
@@ -1,3 +1,4 @@
+#!/usr/bin/perl
 # AMPHORA (version 2.0) An Automated Phylogenomic Inference Pipeline for Bacterial and Archaeal Sequences. 
 # Copyright 2011 by Martin Wu
  
diff --git a/Scripts/Phylotyping.pl b/Scripts/Phylotyping.pl
index f954bb3..7979847 100755
--- a/Scripts/Phylotyping.pl
+++ b/Scripts/Phylotyping.pl
@@ -1,3 +1,4 @@
+#!/usr/bin/perl
 # AMPHORA (version 2.0) An Automated Phylogenomic Inference Pipeline for Bacterial and Archaeal Sequences. 
 # Copyright 2011 by Martin Wu