diff --git a/FritzingCheckPart.py b/FritzingCheckPart.py
old mode 100644
new mode 100755
index ce060d3..a43cbf4
--- a/FritzingCheckPart.py
+++ b/FritzingCheckPart.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python3
+#!/usr/bin/env python3
 
 # A Fritzing part check script. This will read various types of Fritzing files
 # (.fzp and .svg) and both check them for correctness and converting xml
diff --git a/FritzingTools.py b/FritzingTools.py
old mode 100644
new mode 100755
index c68e9a9..2c48d0d
--- a/FritzingTools.py
+++ b/FritzingTools.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python3
+#!/usr/bin/env python3
 
 # Various support routines for processing Fritzing's fzp and svg files. 
 
diff --git a/PP.py b/PP.py
old mode 100644
new mode 100755
index 24fc200..a5c3020
--- a/PP.py
+++ b/PP.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python3
+#!/usr/bin/env python3
 
 # A python xml pretty_print script written to pretty print svg files from 
 # Inkscape, but should work on pretty much any xml. 
diff --git a/PPTools.py b/PPTools.py
old mode 100644
new mode 100755
index 1fedc5d..8244a0c
--- a/PPTools.py
+++ b/PPTools.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python3
+#!/usr/bin/env python3
 
 # The support routines for pretty printing Fritzing svg files (and possibly
 # other xml as well.)