diff --git a/README.md b/README.md
index f537691..3b5fb9c 100644
--- a/README.md
+++ b/README.md
@@ -42,8 +42,7 @@ Requirements:
 
 To run the Shellac web app server, do this in a terminal:
 
-    cd svc/shellac
-    ./run
+    ./svc/shellac/run
 
 To install the Chrome extension:
 
diff --git a/svc/shellac/run b/svc/shellac/run
index 1ede85e..55d1d54 100755
--- a/svc/shellac/run
+++ b/svc/shellac/run
@@ -1,3 +1,6 @@
 #!/bin/sh
-cd ../..
+
+filename=`realpath "$(type $0 | awk '{print $3}')"`
+dirpath=`dirname ${filename}`
+cd "$dirpath/../.."
 exec bin/webapp.py 8783