-

diff --git a/sf-bootstrap b/sf-bootstrap
index f39cb77..b9e0343 100755
--- a/sf-bootstrap
+++ b/sf-bootstrap
@@ -452,10 +452,14 @@ class BootstrapBase
     def add_automation_to_path
 
         log_info( "Writing default path to /etc/environment" )
-        File.open( '/etc/environment', 'a' ) { |f|
-            f.puts "# Written by sf-bootstrap"
-            f.puts "PATH=/opt/automation/usr/bin:/usr/local/bin:/bin:/usr/bin"
-        }
+        env_contents = []
+        File.open( '/etc/environment', 'r').each_line { |line| env_contents.push line }
+        if ! env_contents.include? /sf-bootstrap/
+            File.open( '/etc/environment', 'a' ) { |f|
+                f.puts "# Written by sf-bootstrap"
+                f.puts "PATH=/opt/automation/usr/bin:/usr/local/bin:/bin:/usr/bin"
+            }
+        end
 
         log_info( "Writing conditional path appender to /etc/profiles.d/sf_automation.sh" )
         File.open( '/etc/profile.d/sf_automation.sh', 'w' ) { |f|